bluuebunny/crossref_metadata_2025 huggingface dataset:
Plasmonic Anderson localization enhances the SPP-photon-exciton interaction in 2D disordered nanostructures
Authors: Peng Ru-Wen , Zhu Yingying , Li Cheng-Yao , Xiong Bo , Wang Mu
Published: August 2021

We experimentally demonstrate the Anderson localization of surface plasmon polaritons (SPPs) at optical frequencies in two-dimensional (2D) nanostructures. By increasing the positional disorder of the silver nanohole arrays on a glass substrate, strong 2D localization of SPPs appears with an exponentially decreased electric field, the reduced propagation length and the rapid disappearance of the autocorrelation coefficient. Moreover, we manage to realize the localized SPP-photon-exciton interactions in the 2D disordered silver nanoarrays combined with fluorescent dye molecules. Due to the disorder in the nanoarray, the collected photoluminescence from fluorescent dye molecules is enhanced by over 3 orders of magnitude comparing to that on the silver film without nanostructures. Our study extends Anderson localization of SPPs at visible regime to 2D disordered systems, and provides a unique way to enhance light-matter interaction in SPP-based nanodevices.
Probing the Long-Range Transport Dynamics of Bloch Surface-Wave Polaritons by Ultrafast Microscopy
Authors: Balasubrahmaniyam M. , Simkhovich Arie , Golombek Adina , Schwartz Tal
Published: August 2021

Using time-resolved microscopy, we study the long-range transport dynamics of collective excitations in an organic Bloch surface-wave polariton system. Our measurements reveal sub-ballistic transport with transient population oscillations having a finite coherence length.
Mechanically Reconfigurable Multi-Functional Meta-Optics
Authors: Ballew Conner , Roberts Gregory , Camayd-Muñoz Philip , Debbas Maximilien F. , Faraon Andrei
Published: August 2021

We explore mechanically reconfigurable meta-optics with switchable optical functionality. 3D-printed microwave devices featuring broadband focusing, spectral demultiplexing, and polarization splitting are measured with various reconfiguration schemes, including shearing and auxetic transformations.
2D Beam Shaping via 1D Spatial Light Modulation and Meta-optics
Authors: Whitehead James E. M. , Ryou Albert , Colburn Shane , Zhelyeznyakov Maksym , Majumdar Arka
Published: August 2021

A metasuface system is proposed to perform a non-trivial 1D-to-2D optical transform. Gradient based methods for a metasurface doublet are used to optimized input-ouput relation yielding an effective 2D SLM from a 1D SLM.
Two-Dimensional Terahertz Spectroscopy of Collective Excitations in Solids
Authors: Knighton Brittany E. , Nielson Megan F. , Davis Lauren R. , Alejandro Aldair , Nelson Emma , Moss Clayton D. , Woolley Joel T. , Dominguez Josue , Johnson Jeremy A.
Published: August 2021

Using two-dimensional (2D) terahertz spectroscopy we investigate fundamental electronic, lattice, and spin excitations in solids, and the couplings between them.
Non-perturbative Subcycle Nonlinearities of Ultrastrong Light-Matter Coupling
Authors: Mornhinweg Joshua , Halbhuber Maike , Ciuti Cristiano , Bougeard Dominique , Huber Rupert , Lange Christoph
Published: August 2021

Driving an ultrastrongly light-matter coupled system by strong, coherent THz waveforms competing with the vacuum electromagnetic field, we observe strong nonlinearities including eight-wave mixing and nonlinear polariton correlations beyond the normal-mode approximation.
Dipole-Dipole Interactions Between Pairs of Silicon-Vacancy Centers in Diamond
Authors: Day Matthew W. , Bates Kelsey M. , Smallwood Christopher L. , Owen Rachel C. , Ulbricht Ronald , Cundiff Steven T.
Published: August 2021

Silicon-vacancy centers in diamond are leading candidates for future quantum telecommunications, memory, and computing applications. We report dipole-dipole interactions between distinct silicon-vacancy centers in diamond with implications for quantum sensing and information exchange between centers.
Controlling coherence time of silicon vacancy centers in diamond using phononic crystals
Authors: Chia Cleaven , Kuruma Kazuhiro , Pingault Benjamin , Lončar Marko
Published: August 2021

We design and fabricate phononic crystals in single-crystal diamond hosting silicon vacancy centers. The complete bandgap in the phononic crystals aims to improve coherence of optical transitions in silicon vacancy centers by suppressing phonon-driven processes.
Modifying NV center charge states with a few photon IR microcavity fields
Authors: Kavatamane Vinaya K. , Shandilya Prasoon K. , Lake David P. , Mitchell Matthew , Sukachev Denis D. , Barclay Paul E.
Published: August 2021

We report nonlinear optical modification of the charge states of NV centers in a high-Q diamond microdisk cavity through a few photon telecom wavelenth intracavity field.
Defect and Strain Engineering of Monolayer WSe2 for Site-Controlled Single-Photon Emission up to 150K
Authors: Parto Kamyar , Banerjee Kaustav , Moody Galan
Published: August 2021

Via a decoupled strain and defect engineering technique, a new approach for engineering site-specific single-photon emitters in WSe2 is introduced, which enables high-yield, above 95% purity, and extended working temperatures up to 150 K.
Simultaneous measurements of high-order harmonics, accelerated electrons and protons emitted from relativistic plasma mirrors
Authors: Kaur Jaismeen , Levy Dan , Ouillé Marie , Andriyash Igor , Kroupp Eyal , Malka Victor , Faure Jérôme , Haessler Stefan , Lopez-Martens Rodrigo
Published: August 2021

We report the first simultaneous measurements of high-harmonic generation, accelerated electron and proton beams generated on relativistic plasma mirrors with controlled scale length using laser pulses with duration tunable from 27 fs to sub-4 fs.
Slow and fast light in plasma
Authors: Goyon C. , Edwards M. R. , Chapman T. , Divol L. , Lemos N. , Williams G. J. , Mariscal D. A. , Turnbull D. , Hansen A. M. , Michel P.
Published: August 2021

Slow and fast light require precise tailoring of the refractive index of a medium. We present the first experimental demonstration of such control inside plasma, reporting group velocity of light between 0.12c and -0.34c.
High-harmonic Generation in Metallic Titanium Nitride
Authors: Korobenko A. , Saha S. , Godfrey A. T. K. , Gertsvolf M. , Naumov A. Yu. , Villeneuve D. M. , Boltasseva A. , Shalaev V. M. , Corkum P. B.
Published: August 2021

We demonstrate that high-harmonics generation (HHG) in metallic titanium nitride outperforms HHG in conventional metals limited by the damage threshold. Metal harmonics can link solid and plasma HHG together, and pave way for XUV generating plasmonics.
Higher-Order Topological States in the Extended Two-Dimensional SSH Model and Their Electric Circuit Implementation
Authors: Olekhno Nikita A. , Rozenblit Alina D. , Kachin Valerii I. , Burmistrov Oleg I. , Dmitriev Alexey A. , Seregin Pavel S. , Zhirihin Dmitry V. , Gorlach Maxim A.
Published: August 2021

We demonstrate that couplings between diagonal next-nearest neighbor sites give rise to higher-order topological corner states observed recently in the microwave experiments with coupled resonator arrays realizing two-dimensional Su-Schrieffer-Heeger model.
Multimode Floquet Photonic Topological Insulators
Authors: Saiji Shruti J. , Bandres Miguel A.
Published: August 2021

We show that it is possible to have a multimode Floquet photonic topological insulator. We show that the use of high order modes introduces new degrees of freedom that can help to realize novel topological phenomena.
Observation of splitting of charge-2 Weyl points in 3D micro-printed photonic crystals
Authors: Jörg Christina , Vaidya Sachin , Noh Jiho , Cerjan Alexander , Augustine Shyam , von Freymann Georg , Rechtsman Mikael C.
Published: August 2021

We experimentally demonstrate splitting of a charge-2 Weyl point into two charge-1 Weyl points in a 3D micro-printed photonic crystal. We measure its angle-resolved spectrum in the near-infrared via Fourier-transform infrared spectroscopy.
A programmable electro-optic Bell-state analyzer for spectrally distinguishable photons
Authors: Lingaraju Navin B. , Lu Hsuan-Hao , Leaird Daniel E. , Estrella Steven , Lukens Joseph M. , Weiner Andrew M.
Published: August 2021

We demonstrate a Bell-state analyzer that operates directly on frequency mismatch and unambiguously distinguishes two of four Bell states with accuracy exceeding 98%, opening a feasible path to wavelength-multiplexed quantum networks.
Scaling the discrete Fourier transform gate in the quantum frequency processor
Authors: Lu Hsuan-Hao , Lingaraju Navin B. , Leaird Daniel E. , Weiner Andrew M. , Lukens Joseph M.
Published: August 2021

We show that the d-dimensional discrete Fourier transform can be implemented by adding RF harmonics to the applied modulation in a quantum frequency processor. Implementing the d = 3 case experimentally, we quantify entanglement and perform full quantum state tomography.
Phase-matching-free Two-color Terahertz Emission from Quasi-2D media
Authors: Totero Gongora Juan S. , Peters Luke , Tunesi Jacob , Cecconi Vittorio , Clerici Matteo , Pasquazi Alessia , Peccianti Marco
Published: August 2021

We provide the first demonstration of two-color optical rectification from semiconductors in an extreme absorption regime. The THz generation is free from phase-matching constraints due to the confinement of the interaction within a 25-atomic-layer region.
Carrier-Envelope Phase Dependence of High-Harmonics Generated with a Frequency Comb
Authors: Lesko Daniel M. B. , Allison Thomas K. , Diddams Scott A.
Published: August 2021

Utilizing a robust few-cycle Er:fiber comb source, we demonstrate solid state HHG in ZnO at 100 MHz. We measure the carrier-envelope phase dependence of the UV harmonic generation with >85 dB of dynamic range.
Analysis of Dissipation Mechanisms and Thermal Dynamics in Nanophotonic Resonators Using Thermo-Optical Effect
Authors: Wang Mingkang , Perez-Morelo Diego J. , Aksyuk Vladimir
Published: August 2021

We present a robust method to distinguish the absorption loss from other loss mechanisms in a nanophotonic resonator by characterizing its thermo-optical nonlinearity. Using this method, we analyze ten modes of drastically different quality-factors.
Optothermal generation and manipulation of plasmons in in atomically thin films
Authors: Dias Eduardo J. C. , Yu Renwen , de Abajo F. Javier García
Published: August 2021

Nanoscale photothermal effects enable important applications in cancer therapy, imaging and catalysis. These effects also induce substantial changes in the optical response experienced by the probing light, thus suggesting their application in all-optical modulation. Here, we demonstrate the ability of graphene, thin metal films, and graphene/metal hybrid systems to undergo photothermal optical modulation with depths as large as >70% over a wide spectral range extending from the visible to the terahertz frequency domains.
Solution-processed Plasmonic Surfaces as Optical Components for Infrared Thermography
Authors: Mandal Jyotirmoy , Brewer John , Mandal Sagar , Raman Aaswath
Published: August 2021

Plasmonic nanoparticle-coated metal substrates, created with common materials and scalable fabrication techniques, yield solar absorptance and LWIR reflectance comparable to yields of standard germanium-based optics used in thermography, but at a fraction of the cost.
Impact of Nonlocality on Polar Nanophotonics
Authors: Gubbin Christopher R. , De Liberato Simone
Published: August 2021

In nanoscale polar resonators local theories of the optical response can break down. Here we develop theories to understand these effects, demonstrating novel phonon-photon interactions with applications in mid-infrared nanophotonics and optoelectronics.
Observation of the Fermi Pasta Ulam recurrences multiple symmetry breakings triggered by optical fiber losses
Authors: Vanderhaegen Guillaume , Szriftgiser Pascal , Kudlinski Alexandre , Conforti Matteo , Trillo Stefano , Mussot Arnaud
Published: August 2021

We experimentally investigate the influence of optical fiber loss on the dynamics of the FPU process. We show that the symmetry of the FPU process can be broken several times by tuning the fiber loss value.
Laser cooling of ytterbium-doped silica glass by more than 6 Kelvin
Authors: Peysokhan Mostafa , Rostami Saeid , Mobini Esmaeil , Albrecht Alexander R. , Kuhn Stefan , Hein Sigrun , Hupel Christian , Nold Johannes , Haarlammert Nicoletta , Schreiber Thomas , Eberhardt Ramona , Flores Angel S. , Tünnermann Andreas , Sheik-Bahae Mansoor , Mafi Arash
Published: August 2021

We report nearly an order of magnitude improvement over the lowest temperature achieved in laser-cooling of Yb-doped silica glass. The 6K cooling relative to the ambient temperature was achieved by pumping the sample at 1035nm.
Gain Induced Topological Response via Tailored Long-range Interactions
Authors: Liu Yuzhou G. N. , Jung Pawel , Parto Midya , Hayenga William E. , Christodoulides Demetrios N. , Khajavikhan Mercedeh
Published: August 2021

We report on the first observation of a gain-induced topological response in a photonic lattice exhibiting asymmetric long-range interactions enabled by unidirectional microrings under pumping. This new platform is used to implement the Haldane lattice.
Designing Arbitrarily Large Metasurfaces using Inverse Mapping Technique
Authors: Mansouree Mahdad , McClung Andrew , Arbabi Amir
Published: August 2021

We introduce an inverse mapping technique to design efficient large-scale metasurfaces. A small metasurface is optimized using adjoint optimization, a design map is obtained using the optimization data and used for designing efficient large-scale metasurfaces.
Near-ideal heralded single photons in silicon
Authors: Signorini Stefano , Borghi Massimo , Pavesi Lorenzo , Paesani Stefano , Maïnos Alexandre , Laing Anthony
Published: August 2021

Single photons for quantum computing should be pure, indistinguishable and available in a large amount on the same chip. By using pump-delayed intermodal spontaneous four wave mixing we demonstrated the first source of heralded single photons meeting all these requirements on a silicon chip.
Integration of a visible-telecom PPKTP photon pair source with Silicon Integrated Photonics
Authors: Sundaram Vijay Soorya Shunmuga , Manfreda-Schulz Evan , Hawthorne Todd , Roberts Tony , Palone Thomas , Deenadayalan Venkatesh , Adikarige Chamithri , Ciminelli Mario , Battle Phil , Serafini John , Howland Gregory A. , Preble Stefan F.
Published: August 2021

We demonstrate integration of periodically-poled KTiOPO4 (PPKTP) waveguides generating visible-telecom wavelength photon pairs with Photonic Integrated Circuits, bridging visibly-accessed quantum technologies and telecom infrastructure. High pair rates, heralding and telecom-filterless operation are demonstrated.
Suppression of Nonlinear Parasitic Processes in Linearly Uncoupled Silicon Resonators
Authors: Sabattoli F. A. , El Dirani H. , Youssef L. , Garrisi F. , Grassani D. , Zatti L. , Petit-Etienne C. , Pargon E. , Sipe J. E. , Liscidini M. , Sciancalepore C. , Bajoni D. , Galli M.
Published: August 2021

We report on the suppression of nonlinear parasitic processes affecting dual-pump spontaneous four-wave mixing in ring resonators. We measure an enhancement of over 104 in the signal-to-noise ratio with respect to conventional ring resonators.
Two-photon quantum walks in Su-Schrieffer-Heeger lattices
Authors: Klauck Friederike , Heinrich Matthias , Szameit Alexander
Published: August 2021

We experimentally study quantum correlations in two-photon quantum walks at the edges of Su-Schrieffer-Heeger waveguide lattices. In these systems, topological protection serves to systematically enhance the broadening of the state compared to the trivial edge.
High-flux table-top hard X-ray source driven by femtosecond mid-infrared pulses at a 1 kHz repetition rate
Authors: Koç A. , Hauf C. , Woerner M. , von Grafenstein L. , Ueberschaer D. , Bock M. , Griebner U. , Elsaesser T.
Published: August 2021

Femtosecond X-ray pulses at 8 keV are generated at a 1 kHz repetition rate with a flux of up to 1.5 × 1012 photons/s. A multiple-stage optical parametric chirped-pulse amplifier (OPCPA) serves as driver providing 80 fs pulses at a center wavelength of 5 μm.
A high-repetition rate attosecond pulse source for time-resolved coincidence spectroscopy and nanoscale imaging
Authors: Arnold Cord L. , Mikaelsson Sara , Vogelsang Jan , Guo Chen , Sytcevich Ivan , Viotti Anne-Lise , Langer Fabian , Cheng Yu-Chen , Nandi Saikat , Olofsson Anna , Weissenbilder Robin , Mauritsson Johan , L’Huillier Anne , Gisselbrecht Mathieu
Published: August 2021

We present a high-repetition rate, atttosecond light source, emitting controlled short trains of attosecond pulses. We apply this source to the study of photoionization of atoms using a 3D photoelectron/ion coincidence spectrometer.
FLASH2020+: The New High Repetition Rate Coherent Soft X-Ray Facility
Authors: Allaria E. , Hartl M. Beye I. , Kazemi M. , Lang T. , Schaper L. , Schreiber S. , on behalf of the FLASH2020+ team
Published: August 2021

With the ongoing upgrades FLASH2020+ will extend capabilities of
existing Free- Electron-Lasers. Combining a superconducting
electron-beam accelerator with a new external seeding scheme,
FLASH2020+ will provide up to 1 MHz repletion rate highly coherent
pulses.
Nonlinearly Shaped Pulses in the LCLS-II Photoinjector
Authors: Neveu Nicole , Lemons Randy , Duris Joseph , Ding Yuantao , Marinelli Agostino , Mayes Christopher , Durfee Charles , Carbajo Sergio
Published: August 2021

We present a novel nonlinear laser shaping technique to increase X-ray Free Electron Laser brightness and preliminary results estimate an improvement of 25% in emittance relative to the standard configuration of the LCLS-II.
Femtosecond Slicing for the MHz Repetition Rate LCLS-II X-ray Free Electron Laser
Authors: Duris Joseph , Lemons Randy , Zhang Zhen , Ding Yuantao , Marinelli Agostino , Carbajo Sergio
Published: August 2021

We present a method to control the temporal profile of the LCLS-II X-ray free-electron laser by selectively heating parts of the electron beam with a spectrally shaped laser for fast pulse shaping.
Dirac Solitons in Optical Microresonators
Authors: Wang Heming , Lu Yu-Kun , Wu Lue , Oh Dong Yoon , Shen Boqiang , Lee Seung Hoon , Vahala Kerry
Published: August 2021

We demonstrate optical Dirac solitons in microresonators by polarization mode coupling. The solitons show unusual properties such as polarization twisting and asymmetrical spectra, and they provide a road-map for visible-band soliton generation in microresonators.
Fano Resonances in Individual Dielectric Nanoantennas
Authors: Melik-Gaykazyan Elizaveta , Koshelev Kirill , Choi Jae-Hyuck , Kruk Sergey , Bogdanov Andrey , Park Hong-Gyu , Kivshar Yuri
Published: August 2021

We employ azimuthally polarized laser beams to demonstrate experimentally variations of the Fano resonance profiles in the linear spectra of individual AlGaAs nanoantennas and reveal their links to optical bound states in the continuum.
Radial bound states in the continuum
Authors: Kühner Lucca , Ren Haoran , Berté Rodrigo , Maier Stefan A. , Kivshar Yuri S. , Tittl Andreas
Published: August 2021

We experimentally demonstrate a new platform for enhanced light-matter interaction and sensing based on radial bound states in the continuum, which are supported in rings of symmetry-broken dielectric resonators with an ultracompact footprint.
On-chip generation of telecommunications-compatible ultrafast time-bin entangled qubits
Authors: Yu Hao , Chemnitz Mario , Sciara Stefania , Fischer Bennet , Crockett Benjamin , Roztocki Piotr , Little Brent E. , Chu Sai T. , Moss David J. , Azaña José , Wang Zhiming , Morandotti Roberto
Published: August 2021

We demonstrate telecom compatible time-entangled two-photon pairs qubits using an on-chip unbalanced interferometer and spiral waveguide for state preparation/processing and generation, respectively. We show quantum interference and confirm Bell’s inequality violation.
Metalens Array with Controllable Angle of View for Compact, Large Field-of-View Microscopy
Authors: Hu Junjie , Yang Weijian
Published: August 2021

We present an innovative metalens array design with a controllable angle of view. Our design leverages the angular dependent transmission of the metastructure, and enables a compact system for large field-of-view microscopic imaging.
Electrically Switchable Metasurface for Beam Steering Using PEDOT Polymers
Authors: Karst Julian , Ratzsch Juliane , Fu Jinglin , Ubl Monika , Pohl Tobias , Sterl Florian , Malacrida Claudia , Wieland Matthias , Reineke Bernhard , Zentgraf Thomas , Ludwigs Sabine , Hentschel Mario , Giessen Harald
Published: August 2021

We present an electrically switchable metasurface for beam steering where we use the conducting polymer PEDOT as an active material. We show intensity-tunable beam diffraction with angles up to 10°, employing an externally applied voltage.
Understanding the Limits of Sub-diffraction Focusing of Light with Photonic Funnels
Authors: Simmons E. , Li Kun , Briggs A. , Nordin L. , Xu J. , Wasserman D. , Podolskiy V.A.
Published: August 2021

We analyze, numerically and experimentally, deep subwavelength focusing of light in new material platform, photonic funnels, implemented at infrared frequencies with semiconductor-based hyperbolic metamaterials, as function of material concentration, geometric profile, and cladding characteristics.
Optical computation of the spin glass dynamics
Authors: Leonetti Marco , Hormann Erik , Leuzzi Luca , Parisi Giorgio , Ruocco Giancarlo
Published: August 2021

Spin Glasses(SG) are paradigmatic models with many applications, while their dynamics is difficult to treat because is NP-hard. Here we implement the optical simulation of a SG demonstrating a speedup with respect to in-silico simulations.
Femtosecond nano-videography of interlayer charge transfer in van der Waals heterostructures
Authors: Zizlsperger M. , Plankl M. , Faria Junior P. E. , Mooshammer F. , Siday T. , Sandner F. , Schiegl F. , Maier S. , Huber M. A. , Gmitra M. , Fabian J. , Boland J. L. , Cocker T. L. , Huber R.
Published: August 2021

Tunneling between atomic layers strongly changes the polarizability of electron-hole pairs in van der Waals heterobilayers. By monitoring this dynamics with a near-field microscope, we record subcycle nano-movies of local tunneling processes even in insulators.
Nano-imaging the Few-fs Coherent Dynamics of Graphene
Authors: Luo Wenjin , Jiang Tao , Kravtsov Vasily , Tokman Mikhail , Belyaninand Alexey , Raschke Markus B.
Published: August 2021

We demonstrate coherent spatio-temporal nano-imaging of graphene and its plasmonic nano-structures in four-wave mixing through adiabatic plasmonic nanofocusing. We resolve nanoscale heterogeneity and ultrafast dephasing affected by weakly screened carrier-carrier scattering.
Ultrafast Heterodyne Infrared Nano-Imaging of Polaron Dynamics in Lead Halide Perovskites
Authors: Nishida Jun , Chang Peter T. S. , Ye Jiselle , Sharma Prachi , Shaheen Sean E. , Raschke Markus B.
Published: August 2021

Ultrafast heterodyne infrared nano-imaging has been developed to reveal nanoscale heterogeneity of polaron formation, dynamics, and polaron-cation coupling in lead halide perovskites, with real space-time mapping of elementary electron-phonon coupling underlying their optoelectronic response.
Imaging the dynamics of 2D polariton wavepackets
Authors: Kurman Yaniv , Dahan Raphael , Shenfux Hanan Herzig , Wang Kangpeng , Yannai Michael , Adiv Yuval , Rienhardt Ori , Tizei Luiz H. G. , Woo Steffi , Kociak Mathieu , Koppens Frank H. L. , Kaminer Ido
Published: August 2021

We use ultra-fast electron microscopy to measure the spatio-temporal dynamics of phonon-polariton wavepackets in a thin hBN sample. The electron probe enables recording the wavepacket formation, propagation, and decay, unveiling intriguing acceleration & deceleration phenomena.
Attosecond and Soft X-ray Time-Resolved Dynamics
Authors: Leone Stephen R.
Published: August 2021

High order harmonics are used for molecular and solid-state time-resolved investigations down to attosecond timescales, based on transient absorption, transient reflectivity, four-wave mixing, and diffraction, revealing states of matter, curve crossings, and coherent superpositions.
Real-time Probing of an Atmospheric Photochemical Reaction by Ultrashort EUV Pulses: Nitrous Acid Release from o-Nitrophenol
Authors: Nitta Yuki , Schalk Oliver , Igarashi Hironori , Wada Satoi , Tsutsumi Takuro , Saita Kenichiro , Taketsugu Tetsuya , Sekikawa Taro
Published: August 2021

Photolysis of o-nitrophenol, contained in brown carbon in the atmosphere, was investigated by time-resolved photoelectron spectroscopy with EUV light and by theoretical calculations to disentangle all reaction steps from the excitation to the dissociation.
Single Image Measurement of an Isolated Attosecond Pulse
Authors: Ko Dong Hyuk , Brown Graham G. , Zhang Chunmei , Corkum Paul B.
Published: August 2021

Single image measurement of an attosecond pulse is demonstrated for its complete temporal characterization. To determine the spectrally resolved emission time of the attosecond pulse, we image the dipole modulated by a time-dependent optical grating.
Collective dynamics in nonlinear resonators coupled in spatial and synthetic dimensions
Authors: Tusnin Aleksandr , Tikan Alexey , Kippenberg Tobias
Published: August 2021

We theoretically investigate chaotic and stable structures in coupled-resonator chains and synthetic frequency dimension influenced by Kerr nonlinearity, thereby bringing insights in the emerging field of soliton generation in chains and lattices of high-Q resonators.
Non-linear Response of CdSe/CdS Quantum Dots Driven by Intense Terahertz Pulses
Authors: Gollner Claudia , Jutas Rokas , Dirin Dmitry N. , Boehme Simon C. , Baltuska Andrius , Kovalenko Maksym V. , Pugzlys Audrius
Published: August 2021

We report on the observation of quantum confined stark effect (QCSE) in CdSe/CdS core/shell quantum dots (QDs) directly driven by an intense THz field, generated in the organic crystal DAST, which is pumped with multi-millijoule mid-IR pulses.
Real-time imaging of surface waves with nonlinear near-field optical microscopy
Authors: Frischwasser Kobi , Cohen Kobi , Kher-Alden Jakob , Dolev Shimon , Tsesses Shai , Bartal Guy
Published: August 2021

We introduce nonlinear near-field optical microscopy (NNOM), capable of real-time evanescent wave imaging by nonlinear wave mixing. Using NNOM, we exhibit phase-resolved polarization- and spin-sensitive near-field mappings of plasmonic patterns using only standard optical components.
Thermalization of orbital angular momentum in highly multimoded nonlinear optical fibers
Authors: Wu Fan O. , Zhong Qi , Ren Huizhong , Jung Pawel S. , Khajavikhan Mercedeh , Christodoulides Demetrios N.
Published: August 2021

We demonstrate that, due to nonlinear interactions, the orbital angular momentum in a multimode optical fiber can reach a thermal equilibrium state that is characterized by a temperature and a generalized Rayleigh-Jeans distribution.
All-Optically Controlled Active Liquid-Crystal Plasmonic Metasurface Platform
Authors: Sharma Mukesh , Ellenbogen Tal
Published: August 2021

We experimentally demonstrate all‐optically controlled active liquid‐crystal (LC) plasmonic metasurface platform, based on laser‐induced nematic‐to‐isotropic (N-I) phase transition, which enables polarization switching in twisted‐NLC layer that controls the color of transmitted and reflected light.
Terahertz Emission from Ultrafast Time-Varying Metamaterials
Authors: Tunesi J. , Peters L. , Totero Gongora J. S. , Olivieri L. , Fratalocchi A. , Pasquazi A. , Peccianti M.
Published: August 2021

We demonstrate a time-dependent dielectric metasurface with sub-cycle dynamics coupled with a photoexcited electromagnetic source. The ultrafast photoexcitation of nanostructured Silicon acts as a temporal discontinuity affecting the nonlinear response responsible for terahertz emission.
Strong Coupling in a Self-Coupled Terahertz Photonic Crystal
Authors: Kaeek Maria , Damari Ran , Fleischer Sharly , Schwartz Tal
Published: August 2021

We demonstrate and study experimentally strong coupling in a monolithic, 1D terahertz photonic crystal, in which the guided modes are strongly coupled with the vibrational excitation of the organic material comprising the photonic structure.
Moiré Pattern of Interference Dislocations and Superfluidity in Condensate of Indirect Excitons
Authors: Leonard J.R. , Hu Lunhui , High A.A. , Hammack A.T. , Wu Congjun , Butov L.V. , Campman K.L. , Gossard A.C.
Published: August 2021

We present a new mechanism, the moiré effect, which leads to the appearance of dislocations in interference patterns. Remote interference dislocations in condensate of indirect excitons originate from the moiré effect and evidence exciton superfluidity.
Predicting 2D THz Spectra Due to Nonlinear Phononics with First-Principles Calculations
Authors: Davis Lauren Rawlings , Knighton Brittany E. , Nielson Megan F. , Alejandro Aldair , Johnson Jeremy A.
Published: August 2021

We present our method for creating first-principles models of two-dimensional (2D) terahertz spectra in solid materials. We demonstrate the accuracy of these models and their exciting potential in the growing field of nonlinear phononics.
Superradiant Cathodoluminescence
Authors: Reinhardt Ori , Gorlach Alexey , Kaminer Ido
Published: August 2021

We find that laser-driven free-electrons can be coherently-shaped to induce superradiance from many-body quantum emitters. This effect provides new capabilities in electron microscopy&spectroscopy, using high spatio-temporal resolution for coherent control and enhancement of cathodoluminescence.
Unidirectional electronic currents in asymmetric nanojunctions driven by strong optical fields
Authors: Babushkin Ihar , Shi Liping , Husakou Anton , Melchert Oliver , Frank Bettina , Ji Yuemin , Wetzel Gustav , Demircan Ayhan , Lienau Christoph , Giessen Harald , Ivanov Misha , Morgner Uwe , Kovacev Milutin
Published: August 2021

We show the creation of unidirectional currents in nanojunctions in strong optical fields at ambient conditions, with no phase stabilization of the driver. The mechanism is rooted in the inter-cycle interference of the electronic wavepackets in the nanogap.
Single sub-10 nm biomolecule manipulation enabled by opto-thermo-electrohydrodynamic tweezers
Authors: Hong Chuchuan , Yang Sen , Ndukaife Justus C.
Published: August 2021

Our opto-thermo-electrohydrodynamic tweezers (OTET) enables the trapping and dynamic manipulation of sub-10 nm size biomolecules several microns away from the high intensity laser focus thereby mitigating detrimental photo-induced heating effect.
Optical Trapping of Nanoparticles with Plasmonic Apertures Generated by Algorithm
Authors: Li Neuton , Cadusch Jasper , Crozier Kenneth B.
Published: August 2021

Plasmonic apertures for optical nanotweezers are designed by an algorithm and fabricated with a helium ion microscope. Optical trapping experiments are performed. At every laser intensity, an algorithm-designed structure can outperform a conventional plasmonic aperture.
All-dielectric Nanoantenna for Low Power Optical Trapping of Nanoscale Objects with Ultra-low Heat Generation
Authors: Jiang Yuxi , Hong Chuchuan , Yang Sen , Ndukaife Justus C.
Published: August 2021

We report a dielectric nanoantenna system for the low-power optical trapping of nanoscale objects with ultra-low photothermal heating effect and enhanced trapping stability.
Coherent Control of Single-Molecule Switching Reactions with Femtosecond Atomic Forces
Authors: Kastner Lukas Z. , Peller Dominik , Buchner Thomas , Roelcke Carmen , Albrecht Florian , Moll Nikolaj , Huber Rupert , Repp Jascha
Published: August 2021

Applying femtosecond atomic forces to key atoms of a single-molecule switch allows us to coherently steer a frustrated structural rotation that modulates the molecule's switching probability by up to 39%.
Quantum-enhanced data classification with a variational entangled sensor network
Authors: Xia Yi , Li Wei , Zhuang Quntao , Zhang Zheshen
Published: August 2021

We report the experimental demonstration of supervised learning assisted by an entangled sensor network (SLAEN). We show an entanglement-enabled reduction in the error probability for classification of multidimensional radio-frequency signals.
LDPC-Coded Squeezed-Displaced States-based Quantum Communications
Authors: Djordjevic Ivan B.
Published: August 2021

We demonstrate that LDPC-coded squeezed-displaced-states-based QPSK has better tolerance to background noise and significantly outperforms corresponding coherent states-based counterpart. For average number of thermal photons 0.3, for LDPC-code of rate 0.8, the improvement is >3 dB.
Suppressing meta-holographic artifacts by laser coherence tuning
Authors: Eliezer Yaniv , Qu Geyang , Yang Wenhong , Wang Yujie , Yilmaz Hasan , Xiao Shumin , Song Qinghai , Cao Hui
Published: August 2021

Metaholograms suffer from imaging coherent artifacts originating from the electromagnetic cross-talk and defects of nanoscale features. Here, we introduce an efficient method to remove the artifacts by precisely fine-tuning the spatial coherence of illumination.
Low-Threshold Lasing from Anapole Metasurfaces
Authors: Tripathi Aditya , Kruk Sergey , Kim Ha-Reem , Park Hong-Gyu , Rybin Mikhail V. , Kivshar Yuri
Published: August 2021

We study active metasurfaces composed of arrays of split-nanodisk resonators made of InGaAs slab with embedded InGaAsP quantum wells. We demonstrate lasing from high-Q localized anapole modes with high coherence, narrow linewidth, and low threshold.
Ultrashort Pulse Compression via Metasurfaces
Authors: Ossiander Marcus , Huang Yao-Wei , Chen Wei Ting , Wang Zhenhao , Ibrahim Yousef Ahmed , Schultze Martin , Capasso Federico
Published: August 2021

We experimentally demonstrate a transmissive metasurface providing broadband negative group delay dispersion applicable in the visible to near-infrared region. The metacompressor can compress ultrashort laser pulses or compensate the dispersion of up to 4-mm-thick fused silica.
Eliminating dual-polarization laser emission and spatial hole burning by using parity-time-symmetric eigenstates
Authors: Bisson Jean-François , Nonguierma Yves Christian
Published: August 2021

The polarization states of a resonator made of anisotropic mirrors are shown to coalesce into a single eigenstate at the exceptional point and to eliminate spatial hole burning, thereby promoting single mode laser operation.
Phase Retrieval of Vortices in Bose-Einstein Condensates
Authors: Ziv Ron , Sagi Yoav , Eldar Yonina C. , Segev Mordechai
Published: August 2021

We propose a measurement scheme enabling reconstruction of the amplitude and phase of wavefunctions in Bose-Einstein condensates from their momentum power-spectrum. Our method reduces ambiguities and allows the reconstruction of arrays of vortices.
Low-noise GaAs quantum dots in a p-i-n diode
Authors: Zhai Liang , Nguyen Giang N. , Löbl Matthias C. , Spinnler Clemens , Javadi Alisa , Ritzmann Julian , Wieck Andreas D. , Ludwig Arne , Warburton Richard J.
Published: August 2021

Our GaAs quantum dots device exhibits ultra-low noise as evidenced by optical linewidths close-to the ideal limit, an elimination of blinking, charge locked by Coulomb blockade, high-fidelity spin initialization, and a long electron-spin lifetime.
Spin-phonon interactions in Quantum Spin Liquid Candidate α-RuCl3
Authors: Pai Yun-Yi , Marvinney Claire E. , Feldman Matthew A. , Xiao Kai , Yan Jiaqiang , Lawrie Benjamin J.
Published: August 2021

We study spin-phonon interactions in quantum spin liquid candidate RuCl3 under magnetic fields of up to 6T and mK temperatures with polarization-resolved Raman spectroscopy.
High-energy multidimensional solitary states in hollow-core fibers
Authors: Safaei Reza , Fan Guangyu , Kwon Ojoon , Légaré Katherine , Lassonde Philippe , Ibrahim Heide , Légaré François
Published: August 2021

We report the first time observation of the formation of highly-stable multidimensional solitary states (MDSS) in gas-filled hollow-core fibers. The MDSS have broadband red-shifted spectra with an uncommon negative quadratic spectral phase at output, originating from strong intermodal interactions.
Pulse energy scaling of multipass spectral broadening beyond 100 mJ
Authors: Kaumanns Martin , Kormin Dmitrii , Nubbemeyer Thomas , Pervak Vladimir , Karsch Stefan
Published: August 2021

We spectrally broaden 1.3 ps pulses and show compressibility to 37 fs for energies >100 mJ at a repetition rate of 5 kHz by using a first order Laguerre-Gaussian mode in an argon-filled multipass cell.
Spatial-spectral characteristics of pulses from multi-pass cell and multiple-plate continuum compressors
Authors: Liang An-Yuan , Tsai Chia-Lun , Lu Chih-Hsuan , Chen Ming-Chang , Yang Shang-Da
Published: August 2021

Spatial-spectral characteristics of Yb:KGW laser pulses passing through a multi-pass cell and a multiple-plate continuum are analyzed. The former exhibits slightly better spectral homogeneity under the same degree of spectral broadening due to less B-integral per pass.
Reservoir Computing with Low-Power-Consumption All-Optical Nonlinear Activation Using Membrane SOA on Si
Authors: Tsurugaya Takuma , Hiraki Tatsurou , Nakajima Mitsumasa , Aihara Takuma , Diamantopoulos Nikolaos-Panteleimon , Fujii Takuro , Segawa Toru , Matsuo Shinji
Published: August 2021

We demonstrate reservoir computing using a fiber delay line and membrane semiconductor optical amplifier on Si. Thanks to its small active volume and low fiber-coupling loss, the reservoir consumes only 43 mW for nonlinear activation.
Multilayer Holographic Perceptrons for All-optical Aberration Detection
Authors: Goi Elena , Schoenhardt Steffen , Gu Min
Published: August 2021

We present aberration detectors based on multi-layered perceptrons printed by two-photon nanolithography. Through all-optical inference, the perceptrons can collect phase information from a point spread function performing direct aberration detection in a single step.
Efficient Ultra-broadband Optical Parametric Generation with Picojoule Pulse Energies
Authors: Jankowski Marc , Jornod Nayara , Langrock Carsten , Desiatov Boris , Marandi Alireza , Lončar Marko , Fejer Martin M.
Published: August 2021

We demonstrate high-gain optical parametric generation in dispersion- engineered PPLN nanowaveguides with picojoules of pump pulse energy. When driven with >10 pJ, the generated signal exceeds 10% conversion efficiency and broadens to span an octave of bandwidth.
Ultralow-loss meter-long dispersion-engineered silicon nitride waveguides
Authors: Ye Zhichao , Zhao Ping , Twayana Krishna , Karlsson Magnus , Andrekson Peter A. , Torres-Company Victor
Published: August 2021

We demonstrate dispersion-engineered meter-long silicon nitride waveguides with record-low loss of 1.4 dB/m. Based on these, we demonstrate continuous-wave-pumped optical parametric amplification for the first time in an integrated Kerr nonlinear waveguide.
Photonic Integration - from Switching to Computing
Authors: Liboiron-Ladouceur Odile
Published: August 2021

A mesh of interferometers can be arranged to route an optical signal or linearly transform an optical input vector. The talk discusses how Mach-Zehnder based switches became key in optical processors.
On the Impact of Probabilistic Shaping Rates to the Decision-based Phase Noise Mitigation
Authors: Chen Zexin , Tang Ming , Fu Songnian , Wang Yuncai , Qin Yuwen
Published: August 2021

We investigate how shaping rates of probabilistic shaping quadrature amplitude modulation (PS-QAM) affect the performance decision-based phase noise mitigation, and propose a modified BPS algorithm with experimental verifications for 24/32-Gbaud PS-64QAM and 28-Gbaud PS-16QAM.
Electrically injection-locked quantum dash frequency-modulated comb
Authors: Ossiander Marcus , Auth Dominik , Hillbrand Johannes , Gaimard Quentin , Kazakov Dmitry , Piccardo Marco , Ramdane Abderrahim , Capasso Federico , Schwarz Benedikt , Breuer Stefan
Published: August 2021

Inter-mode beat frequency tuning of a quantum dash comb laser by electrical injection locking is presented. Frequency-modulated comb generation at 6350 cm-
1
(1575 nm, telecom L-band) is confirmed by beat note spectroscopy. A 1.8 MHz wide beat frequency tuning range, injection power and injection frequency dependent beat frequency locking are sup-ported by a coupled oscillator model extended with a noise term.
SESAM Mode-locked High-power sub-100-fs Cr:ZnS Oscillator at 2.37 μm
Authors: Barh A. , Alaydin B. O. , Heidrich J. , Gaulke M. , Golling M. , Phillips C. R. , Keller U.
Published: August 2021

We present a SESAM mode-locked self-starting Cr:ZnS oscillator operating at 2.37 μm, producing record low 80 fs transform limited pulses (bandwidth 71 nm) at average output power of 0.8 W from a 250 MHz cavity.
Silicate Bonding of Sapphire to SESAMs: SESAMs with Tunable Thermal Lensing for High-Power Lasers
Authors: Lang L. , Saltarelli F. , Lacaille G. , Rowan S. , Hough J. , Graumann I. J. , Phillips C. R. , Keller U.
Published: August 2021

We demonstrate for the first time silicate bonding of a SESAM to a sapphire superstrate to control the sign and magnitude of the SESAMs thermal lensing. We demonstrate modelocking in a 233-W average-power thin-disk laser.
SESAM-modelocked Ho:YAG thin-disk laser with 40.5 W of average power
Authors: Tomilov Sergei , Hoffmann Martin , Heidrich Jonas , Alaydin Behcet Özgür , Golling Matthias , Wang Yicheng , Keller Ursula , Saraceno Clara J.
Published: August 2021

We demonstrate a SESAM, soliton-modelocked, Ho:YAG thin-disk oscillator with 40.5 W of average power, 1.66 ps-long pulses at a pulse energy of 0.78 μJ, representing the highest average power so far demonstrated from an oscillator in the 2 μm wavelength region.
Combined gain media 60 fs Kerr-lens mode-locked laser based on Tm:Lu2O3 and Tm:Sc2O3
Authors: Suzuki Anna , Kränkel Christian , Tokurakawa Masaki
Published: August 2021

We present a combined gain media Kerr-lens mode-locked laser based on Tm-doped sesquioxide materials. Pulses as short as 60 fs were obtained with an average output power of 52 mW at 2.1 μm.
Demonstration of a Kilowatt Average Power, 1 Joule, Green Laser
Authors: Chi Han , Wang Yong , Davenport Aaron , Menoni Carmen S. , Rocca Jorge J.
Published: August 2021

A 1.04 J, λ=515 nm laser at 1 kHz repetition rate was demonstrated by frequency doubling 1.2 J, temporally shaped square 2 ns pulses from a cryogenically cooled Yb:YAG laser in LBO crystals.
Robust Metasurfaces with Tailored Graded Index for High Power Laser Applications
Authors: Ray Nathan J. , Yoo Jae H. , Nguyen Hoang T. , Johnson Michael A. , Baxamusa Salmaan H. , Elhadj Selim , Feigenbaum Eyal
Published: August 2021

Solid-state diffusional dewetting is utilized to produce randomly oriented ensembles of nanoparticles on large scales, which then function as dry etching masks for generation of durable metasurfaces for antireflective and metaoptics applications.
Revisiting temperature-dependent spectroscopy of Yb:YLF
Authors: Püschel S. , Kalusniak S. , Kraenkel C. , Tanaka H.
Published: August 2021

We propose a new model for the temperature-dependent lifetime of Yb:YLF based on Boltzmann population of the upper Stark levels. Temperature-dependent spectroscopy enables to re-evaluate the potential of Yb:YLF for laser cooling.
High Average Power and High Energy Yb:YLF Cryogenic Amplifiers
Authors: Pergament Mikhail , Demirbas Umit , Kellert Martin , Liu Yizhou , Thesinga Jelto , Cankaya Huseyin , Hua Yi , Zapata Luis , Kaertner Franz X.
Published: August 2021

We present initial results from a high-power and high energy sub-ps cryogenic Yb:YLF amplifier chain centered around 1018.5 nm. We have so far achieved average powers above 90-W and pulse energies up to 305 mJ.
1 2 TW Laser Amplifier for High Harmonic Generation and Laser Plasma Acceleration Experiments at 1kHz Repetition Rate
Authors: Greb Christian , Adam Roman , Chalus Olivier , Rey Gilles , Heidtfeld Sarah , Chitgar Zahra M. , Gibbon Paul , Wang Fangzhou , Cao Derang , Büscher Markus , Schneider Claus M.
Published: August 2021

We present the main parameters of the 1.2 TW Ti:Sapphire laser amplifier system operating at 1 kHz. The high quality beam output allows generation of linearly- and circularly polarized photons in the extreme ultraviolet range.
Milliwatt Threshold Ultra-Low Linewidth Photonic Integrated Si3N4 Brillouin Laser
Authors: Liu Kaikai , Puckett Matthew W. , Harrington Mark W. , Brodnik Grant M. , Zhao Qiancheng , Chauhan Nitesh , Wang Jiawei , Behunin Ryan O. , Nelson Karl D. , Blumenthal Daniel J.
Published: August 2021

We report a 1.35 mW threshold Brillouin laser with measured 0.47 Hz fundamental and 525 Hz integral linewidths using a 422 Million intrinsic Q Si3N4 resonator.
Progress in Nonlinear Integrated Photonics Based on Thin-Film Lithium Niobate
Authors: Fathpour Sasan
Published: August 2021

Lithium niobate has been rejuvenated for integrated photonics by development of thin- film wafers of the material on silicon substrates. Recent advancement of devices and circuits demonstrated on this maturing platform for nonlinear-optical applications is reviewed.
Broadband UV-Vis Frequency Combs from High-harmonic Generation in Quasi-phase-matched Waveguides
Authors: Rutledge Jay , Catanese Anthony , Hickstein Daniel D. , Allison Thomas K. , Diddams Scott A. , Kowligy Abijith S.
Published: August 2021

We report efficient, phase-coherent high-harmonic generation in chirped periodically poled lithium niobate waveguides pumped with a watt-scale 3 μm frequency comb. Simulations support a mechanism of cascaded quadratic nonlinearity and provide insight into spectral optimization.
Consequences and Perspectives of the Revised SI for Optical Metrology
Authors: Liebisch Tara Cubel
Published: August 2021

The revised SI, which came into force on May 20th, 2019, bases the system of units on fixed numerical values of constants of nature, so-called "defining constants". An overview of the changes implemented by the revised SI will be presented with an emphasis on the consequences for the unit candela and the unit second; namely, the realization of a traceable, quantum-based candela and a possible redefinition of the unit second. Prospects of time scales and time and frequency transfer will be given.
871nm Ultra-Narrow-Linewidth Laser for Yb+ Clock
Authors: Lai Yu-Hung , Love Stuart , Savchenkov Anatoliy , Eliyahu Danny , Moss Robert , Maleki Lute
Published: August 2021

We demonstrated a miniaturized 871 nm semiconductor laser optically injection locked to a whisper-gallery-mode resonator demonstrating Hertz-level instanta-neous linewidth for Yb+ clock applications. The laser linewidth and short term drift are suppressed by over 104.
Hertz-level-linewidth semiconductor laser via injection locking to an ultra-high Q silicon nitride microresonator
Authors: Jin Warren , Yang Qi-Fan , Chang Lin , Shen Boqiang , Wang Heming , Leal Mark A. , Wu Lue , Gao Maodong , Feshali Avi , Paniccia Mario , Vahala Kerry J. , Bowers John E.
Published: August 2021

A conventional semiconductor DFB laser is self-injection-locked to a CMOS-foundry- fabricated ultra-high Q silicon nitride microresonator, suppressing high-offset frequency noise to 0.2 Hz2 Hz-1 and yielding instantaneous linewidth of 1.2 Hz.
Thulium-Doped Tellurium Oxide Laser for Optical Communication at 2-µm Window
Authors: Kiani Khadijeh Miarabbas , C.Franki Henry , Mateman Richard , Leinse Arne , Knights Andrew P. , Bradley Jonathan D. B.
Published: August 2021

We demonstrate compact thulium-doped tellurium oxide microring lasers integrated on a low-loss silicon nitride platform with the output powers of up to 4.1 mW. We observe lasing in the wavelength range of 1.84–1.88 μm under 1.6 μm resonant pumping at 1.3 μm waveguide- microring gap size.
Multimode Fiber Transmission Matrix Inversion with Densely Connected Convolutional Network for Physical Layer Security
Authors: Zhang Qian , Rothe Stefan , Koukourakis Nektarios , Czarske Jürgen
Published: August 2021

For exploiting multimode fiber optic communication networks towards physical layer security, we have trained a neural network performing mode decomposition of 10 modes. The approach is based on intensity-only camera images and works in real-time.