bluuebunny/crossref_metadata_2025 huggingface dataset:
Controlling Spontaneous Emission with Nanohole-Based Phased-Array Metasurfaces
Authors: Mohtashami Yahya , Heki Larry K. , Alhassan Abdullah , Nakamura Shuji , DenBaars Steven P. , Schuller Jon A.
Published: August 2021

We present metasurfaces made from GaN nanoholes with embedded quantum-well emitters. Using nanolithography, we fabricate 1D beam deflectors and 2D meta-axicons and show that we can manipulate the emitted photoluminescence at will.
Exciton Diffusion and Annihilation in Nanophotonic Purcell Landscapes
Authors: Raziman T. V. , Visser C. Peter , Wang Shaojun , Rivas Jaime Gómez , Curto Alberto G.
Published: August 2021

Conventional nanophotonic emission enhancement neglects excitonic phenomena of diffusion and annihilation. We go beyond the localized Purcell effect and identify the enhancement mechanisms to turn their detrimental impact into additional emission.
Stabilized Depth Cell Imaging through Disordered Fiber System with Semi-supervised Learning Algorithm
Authors: Hu Xiaowen , Zhao Jian , Antonio-Lopez Jose Enrique , Cheng Youyou , Correa Rodrigo Amezcua , Schülzgen Axel
Published: August 2021

With ground truths only at 0 imaging depth, we reconstruct high-quality cell images through disordered optical fiber system up to 3mm imaging depth by tracing the state of the system using cycle-consistent adversarial networks.
Single-shot imaging through scattering media under strong background interferences
Authors: He Shunfu , Li Wei , Xi Teli , Sun Yangfan , Liu Jietao , Shao Xiaopeng
Published: August 2021

We report and demonstrate experimentally an approach to retrieving the object from a single-shot speckle pattern under a strong background light interference. This approach provides a practical solution to natural scene scattering imaging.
Super-Resolution Sensing with a Randomly Scattering Analyzer
Authors: Patel Justin A. , Luo Qiaoen , Webb Kevin J.
Published: August 2021

A randomly scattering analyzer is presented as means to access super-resolution spatial sensing information associated with subwavelength motion of a coherent incident field or remote object and illustrated using cross-correlations of normalized laser speckle patterns.
Misalignment Tolerant Diffractive Optical Networks
Authors: Mengu Deniz , Zhao Yifan , Yardimci Nezih T. , Rivenson Yair , Jarrahi Mona , Ozcan Aydogan
Published: August 2021

Design of diffractive optical networks that are resilient against physical misalignments is reported. The success of this design framework is also experimentally demonstrated using 3D printed diffractive networks that operate at THz wavelengths.
Teleportation-based Protocols with Hybrid Entanglement of Light
Authors: Darras Tom , Cavaillès Adrien , Le Jeannic Hanna , Dong Huazhuo , Asenbeck Beate , Guccione Giovanni , Laurat Julien
Published: August 2021

We report an entanglement swapping protocol implemented between single-photon entanglement and hybrid discrete- and continuous-variables entanglement of light, allowing the connection of disparate nodes in a heterogeneously-structured quantum internet.
Cougate-Franson interferometry for testing nonlocality of time-energy entangled biphotons
Authors: Chen Changchen , Shapiro Jeffrey H. , Wong Franco N. C.
Published: August 2021

We report the first experimental demonstration of a conjugate-Franson interferometer, i.e., a nonlocal interferometer that can certify time-energy entanglement. Our measured 96% visibility tightly bounds the temporal correlation of biphotons generated by spontaneous parametric down-conversion.
Quantification of High-dimensional Energy-time Entanglement in a Biphoton Frequency Comb
Authors: Chang Kai-Chi , Cheng Xiang , Sarihan Murat Can , Vinod Abhinav Kumar , Zhong Tian , Gong Yan-Xiao , Xie Zhenda , Shapiro Jeffrey H. , Wong Franco N. C. , Wong Chee Wei
Published: August 2021

We quantify high-dimensional energy-time entanglement with a filtered biphoton frequency comb. Franson interference measurements are performed, with the entanglement of formation up to 1.89 ± 0.03 ebits for a 45.32 GHz biphoton frequency comb.
Multifunctional Resonant Wavefront-Shaping Meta-Optics
Authors: Malek Stephanie C. , Overvig Adam C. , Alù Andrea , Yu Nanfang
Published: August 2021

We experimentally demonstrate systems of nonlocal optical metasurfaces that spatially shape the incident wavefront deliberately and distinctively for multiple independent resonances without altering the wavefront shape of non-resonant light.
Arbitrary Control of Femtosecond Timescale Complex Electrical-field Transients
Authors: Chen Lu , Zhu Wenqi , Song Junyeob , Huo Pengcheng , Strait Jared , Zhang Cheng , Lezec Henri J. , Xu Ting , Agrawal Amit
Published: August 2021

A dielectric-metasurface-enabled pulse shaper able to tailor the temporal instantaneous polarization states within a near-infrared femtosecond pulse is demonstrated. Simultaneous complex wavefront shaping has been implemented by exploiting metasurfaces’ multi-functionalities within a single-pixel.
Telecom-heralded entanglement distribution between remote, multimode quantum memories in the solid state
Authors: Grandi Samuele , Lago-Rivera Dario , Rakonjac Jelena V. , Seri Alessandro , de Riedmatten Hugues
Published: August 2021

we demonstrate entanglement between two quantum nodes, where the entanglement is generated by non-degenerate photon pair sources and stored in rare-earth based quantum memories that share a delocalized excitation.
Shallow donor qubits in ZnO for quantum memory applications
Authors: Zimmermann Christian , Niaouris Vasilis , Viitaniemi Maria L. , Fu Kai-Mei C.
Published: August 2021

Neutral shallow donors in ZnO are promising candidates for solid-state spin qubits. Here, we report on the suitability of shallow donor qubit ensembles for quantum memory applications.
Rainbow spiral emission from optical fibers
Authors: Mangini F. , Ferraro M. , Zitelli M. , Kalashnikov V. , Niang A. , Mansuryan T. , Frezza F. , Tonello A. , Couderc V. , Aceves A.B. , Wabnitz S.
Published: August 2021

We observed the generation of a spiral-shaped intensity beams from optical fibers under suitable coupling conditions. In nonlinear regime, we observed rainbow-spiral emission thanks to the generation of supercontinuum in the fiber.
Generation of Tornado Waves
Authors: Mansour Dimitris , Brimis Apostolos , Makris Konstantinos G. , Papazoglou Dimitris G.
Published: August 2021

We experimentally generate Tornado Waves using a single phase modulation device. We show that, by applying spatial multiplexing techniques, such complex superimposing fields that carry orbital angular momentum of opposite handedness can be efficiently generated.
Spectrometer-free electron probe of ultrafast thermal dynamics in optically excited samples
Authors: Mkhitaryan Vahagn , Dias Eduardo , Carbone Fabrizio , de Abajo Javier García
Published: August 2021

Cutting edge electron microscopes allow to probe the optical excitations in nanostructures with subangstrom spatial and femtosecond temporal resolution. In this study we discuss the prospects of probing the ultrafast out-of-equilibrium dynamics of plasmonic excitations in graphene and graphite samples. We show that, the plasmon excitation dynamics in nanostructured graphene and graphite can be traced through energy integrated and momentum resolved spectra of inelastically scattered electrons in contrast to more traditional energy-resolved spectroscopy approach, where highly-monochromatized electron beams and electron spectrometers with sufficient energy resolutions are essential.
Quantitative Waveform Sampling on Atomic Scales
Authors: Roelcke Carmen , Peller Dominik , Kastner Lukas Z. , Buchner Thomas , Neef Alexander , Hayes Johannes , Bonafé Franco , Sidler Dominik , Ruggenthaler Michael , Rubio Angel , Repp Jascha , Huber Rupert
Published: August 2021

Using a molecular switch as a local field sensor, we directly sample the temporal shape and strength of atomically confined light field transients inside the tunneling gap of a scanning tunneling microscope.
Bound States in the Continuum Employed for Maximizing Metasurface Chirality
Authors: Gorkunov Maxim V. , Antonov Alexander A. , Kivshar Yuri S.
Published: August 2021

We propose a general approach to design metasurfaces hosting bound states in the continuum for achieving maximum chirality with transparency to one circular polarization and full resonant absorption (or reflection) of the other polarization.
Experimental observation of bound states in the continuum generated by spatial symmetry breaking
Authors: Yoda Taiki , Moritake Yuto , Ono Masaaki , Kuramochi Eiichi , Notomi Masaya
Published: August 2021

We have experimentally demonstrated a new formation mechanism of off-Γ bound states in the continuum (BICs), which are generated by a simple symmetry breaking of trivial at-Γ BICs in photonic crystals.
Symmetry Controlled Nonlinear Beam Shaping in Engineered Optical Media
Authors: Pires Danilo Gomes , Miller Jerome Keith , Johnson Eric G. , Litchinitser Natalia
Published: August 2021

We exploit the synergy between engineered colloidal media and orbital angular momentum (OAM) elliptical and higher order Bessel-Gauss integrated in time beams to study new regimes on nonlinear light matter interactions and on-demand beam shaping.
Tailored non-Hermiticity induced suppression of scattering
Authors: Steinfurth A. , Krešić I. , Weidemann S. , Kremer M. , Makris K. G. , Heinrich M. , Rotter S. , Szameit A.
Published: August 2021

Light waves passing through inhomogeneous media commonly are subject to scattering and subsequent interference. We have optically implemented tailored non-Hermitian media in which scattering is suppressed for stationary as well as for time-dependent field distributions.
Implementing observation-dependent suppression and enhancement of two-photon coincidences in the Hong-Ou-Mandel experiment
Authors: Ehrhardt Max , Heinrich Matthias , Szameit Alexander
Published: August 2021

We investigate the Hong-Ou-Mandel interference of photon pairs in birefringent waveguides with polarization-dependent losses. Depending on the detection basis, we show seamless tunability all the way from enhancement to full suppression of indistinguishable photons.
Free Electrons Can Induce Quantum Correlations Between Two Separate Photonic Cavities
Authors: Baranes Gefen , Ruimy Ron , Gorlach Alexey , Kaminer Ido
Published: August 2021

We find that free electrons passing through two independent photonic cavities induce quantum correlations between them, creating nonzero quantum mutual information and second-order coherence. The concept is general and applicable for example in electron-phonon interactions.
Multi-photon Fock-state generation via climbing the Fock ladder
Authors: Engelkemeier M. , Sperling J. , Tiedau J. , Barkhofen S. , Dhand I. , Plenio M. B. , Brecht B. , Silberhorn C.
Published: August 2021

We demonstrate the enhanced generation of Fock-states with up to three photons using a parametric down-conversion source that combines time-multiplexing and quan-tum feedback and outperforms conventional state generation methods.
Entangled Photon Pair Generation from an AlGaAs-on-Insulator Microring Resonator
Authors: Steiner Trevor J. , Castro Joshua E. , Chang Lin , Dang Quynh , Xie Weiqiang , Li Chenlei , Norman Justin , Bowers John E. , Moody Galan
Published: August 2021

Time-energy entangled-photon pair generation is shown from a Q > 1 million AlGaAs-on-insulator microring resonator with an internal generation rate greater than 20×109 pairs sec
−
1 mW
−
2, heralded single photon purity > 99%, and a visibility > 97%.
Mie Resonances in the Spectrum of Spontaneous Parametric Down-Conversion
Authors: Santiago-Cruz Tomás , Fedotova Anna , Sultanov Vitaliy , Weissflog Maximilian , Younesi Mohammadreza , Staude Isabelle , Pertsch Thomas , Setzpfandt Frank , Chekhova Maria V.
Published: August 2021

We report on the first-time generation of biphotons via spontaneous parametric down-conversion driven by Mie-type resonances in subwavelength metasurfaces. The measured biphoton spectrum reveals that emission predominantly occurs at the resonant wavelength of the metasurface.
Topological and Localized States in Waveguide Quantum Electrodynamics
Authors: Zhong Janet , Poshakinskiy Alexander V. , Ke Yongguan , Olekhno Nikita A. , Lee Chaohong , Kivshar Yuri S. , Poddubny Alexander N.
Published: August 2021

We study theoretically a periodic array of atoms coupled to a waveguide and demonstrate that atom-photon interactions lead to formation of self-induced quantum Hall phases, Hofstadter butterfly and exotic localized three-photon states.
Photon-pair Generation Via Multiple Bound States in the Continuum in Nonlinear Metasurfaces
Authors: Parry Matthew , Mazzanti Andrea , Poddubny Alexander , Valle Giuseppe Della , Neshev Dragomir N. , Sukhorukov Andrey A.
Published: August 2021

We present a nonlinear metasurface with engineered symmetry facilitating an orders-of-magnitude enhancement of photon-pair generation and tunable entanglement through hyperbolic phase matching of spontaneous parametric down-conversion via multiple extended bound states in the continuum.
Manipulating Single Surface Plasmon Polariton via Tailored Atom-Photon Interaction
Authors: Rituraj  , Orenstein Meir , Fan Shanhui
Published: August 2021

We study the interaction of a single surface plasmon polariton with a finite number of atoms and with an infinite atomic lattice. Using only two-level atoms, we achieve subscattering, superscattering, and electromagnetically induced transparency (EIT).
Nonlinear amplitude and spectral control in strongly coupled plasmonic-excitonic nanostructures
Authors: Blechman Yael , Tsesses Shai , Almeida Euclides , Bartal Guy
Published: August 2021

We theoretically demonstrate a tight connection between the linear response of hybrid plasmonic-excitonic metasurface modes in the strong-coupling regime and their nonlinear Four-Wave-Mixing spectral behavior, mediated by the Rabi splitting in the system.
Boosting photonic quantum computation with moderate nonlinearity
Authors: Pick A. , Matekole E. S. , Aqua Z. , Guendelman G. , Firstenberg O. , Dowling J. P. , Dayan B.
Published: August 2021

We present a new pathway towards fault-tolerant photonic quantum computing by using moderate nonlinearity to improve elementary computation operations. This improvement can lead to a three orders-of-magnitude reduction of the resource overhead in large-scale computations.
Experimental demonstration of quantum advantage for NP verification
Authors: Centrone Federico , Kumar Niraj , Diamanti Eleni , Kerenidis Iordanis
Published: August 2021

We showcase the power of linear optics through the implementation of a quantum protocol with coherent states. Our work provides evidence for a computational quantum advantage in the interactive setting, drawing near potentially useful applications.
Attosecond Measurements via Quantum-Enhanced Interferometry
Authors: Lualdi Colin P. , Meier Kristina A. , Johnson Spencer J. , Kwiat Paul G.
Published: August 2021

We discuss achieving attosecond-level temporal resolution via Hong-Ou-Mandel interferometry using highly non-degenerate frequency-entangled photons. This approach offers robustness against dispersion and loss, and facilitates novel sensing schemes in regimes inaccessible by existing interferometers.
Microscopy with undetected photons in the mid-infrared
Authors: Kviatkovsky Inna , Chrzanowski Helen M , Avery Ellen G. , Bartolomaeus Hendrik , Ramelow Sven
Published: August 2021

We demonstrate that nonlinear interferometry with entangled photons provides a powerful and cost-effective technique for microscopy in the mid-IR, harnessing the maturity of silicon-based detection technology to allow wide-field imaging of biological samples at room-temperature.
Effects of Laser Illumination on Superconducting Circuits for Quantum Transduction
Authors: Meesala Srujan , Banker Jash , Wood Steven , Sipahigil Alp , Lake David , Chiappina Piero , Beyer Andrew , Shaw Matthew , Painter Oskar
Published: August 2021

Decoherence and noise from optical absorption in superconducting circuits hinder development of microwave to optical quantum transducers. Addressing these issues, we fabricate niobium-based resonators and qubits, and study them under laser illumination at milliKelvin temperatures.
Observation of nonlinear corner states in a higher-order photonic topological insulator
Authors: Kirsch M. S. , Zhang Y. , Maczewsky L. J. , Ivanov S. K. , Kartashov Y. V. , Torner L. , Bauer D. , Szameit A. , Heinrich M.
Published: August 2021

We experimentally investigate the nonlinear Kerr dynamics in higher-order photonic topological insulators. The topologically protected corner states are robust against nonlinear perturbations and indicates its transition passage through bulk-bands by a brief intermediate delocalization.
Unidirectional Soliton-like Edge Modes in Nonlinear Floquet Topological Insulators
Authors: Mukherjee Sebabrata , Rechtsman Mikael C.
Published: August 2021

We present the first realization of soliton-like unidirectional edge modes on photonic Floquet topological insulators. These nonlinear modes radiate power at a finite and controllable rate because of the intrinsic gaplessness of the topological spectrum.
High-Q localized states in finite extent arrays of Mie resonators
Authors: Savelev Roman , Kornovan Danil , Kivshar Yuri , Petrov Mihail
Published: August 2021

We report on the formation of high-Q localized states in finite arrays of Mie resonators overcoming the previously predicted values by at least two-orders of magnitude, which becomes possible due to destructive interference of band-edge modes.
Low light quantum phase transition in 1T-TaS2 at room temperature
Authors: Li Weijian , Naik Gururaj V.
Published: August 2021

Light-matter interaction in quantum materials presents opportunities for discovery. We observe a low-intensity light-induced phase transition in 1T-TaS2, a quasi-2D material supporting charge-density-waves (CDW). We find that the CDW domains stack differently upon illumination.
Casimir light in dispersive nanophotonics
Authors: Sloan Jamison , Rivera Nicholas , Joannopoulos John D. , Soljačić Marin
Published: August 2021

We present a theory of entangled photon pair emission through the dynamical Casimir effect in systems which are simultaneously dispersive and time dependent. We show surface phonon polariton emission in time-modulated polar insulators.
Tunable transmissive THG in silicon metasurface enabled by phase change material
Authors: Abdelraouf Omar A. M. , Anthur Aravind P. , Liu Hailong , Dong Zhaogang , Wang Qian , Krivitsky Leonid , Wang Xiao Renshaw , Wang Qi Jie , Liu Hong
Published: August 2021

We experimentally demonstrate tunable amplitude of third harmonic generation in silicon metasurface in transmission mode using phase change material, Ge2Sb2Te5, layer of thickness 5 nm only.
Terahertz Polaronic Response of Electrons Solvated in Liquid Water
Authors: Ghalgaoui A. , Fingerhut B. P. , Reimann K. , Woerner M. , Elsaesser T.
Published: August 2021

Free electrons generated via high THz or near-infrared excitation of water have pronounced poloranic character which manifests in coherent oscillations of the terahertz dielectric function. The oscillation frequency scales with the electron concentration.
Confined Exciton Interaction of Erbium Doped GaAs Quantum Wells Elucidated by Multidimensional Coherent Spectroscopy
Authors: Boutelle Robert C. , Autry Travis , Mirin Richard P. , Silverman Kevin L.
Published: August 2021

We investigate the exciton exchange interaction of erbium doped GaAs quantum well using MDCS. We observe an energy shift of ~100µeV consistent with the predicted exchange energy and different pulse sequences activate specific excitonic pathways.
Diamond Phononic Crystals with Silicon-Vacancy Centers at Cryogenic Temperatures
Authors: Joe Graham , Chia Cleaven , Chalupnik Michelle , Pingault Benjamin , Meesala Srujan , Cornell Eliza , Assumpcao Daniel , Machielse Bartholomeus , Lončar Marko
Published: August 2021

We fabricate phononic crystals in single-crystal diamond hosting silicon vacancy centers. We demonstrate high mechanical Q-factors (> 10,000) from localized 10 GHz-frequency mechanical modes in a dilution refrigerator (T < 1K).
Temperature dependent scaling laws of Rydberg excitons in Cu2O
Authors: Gross Aaron , Yang HeeBong , Kang Dongyeon D. , Morita Yusuke , Choi Kyung-Soo , Yoshioka Kosuke , Kim Na Young
Published: August 2021

We measure the yellow P-exciton absorption spectra of Cu2O via temperature-dependent spectroscopy (4-100 K). We study exciton resonance spectral properties in terms of peak energy, spectral linewidth, and oscillator strength according to well-known scaling laws.
Photon Statistics of Filtered Quantum Dot Resonance Fluorescence
Authors: Phillips Catherine L. , Brash Alistair J. , McCutcheon Dara P.S. , Iles-Smith Jake , Skolnick Maurice S. , Fox A. Mark , Nazir Ahsan
Published: August 2021

We exploit spectral filtering to modify the photon statistics of resonance fluorescence from a quantum dot, demonstrating that the observed antibunching is an interference effect and cannot be measured simultaneously with a sub-natural linewidth.
Tip-Enhanced Strong Coupling of Quantum Dot Single Photon Emitters
Authors: May Molly A. , Park Kyoung-Duck , Whetten Benjamin G. , Fialkow David , Kropp Jaron A. , Gougousi Theodosia , Pelton Matthew , Raschke Markus B.
Published: August 2021

We demonstrate room temperature strong coupling of a single quantum emitter to a configurable plasmonic pico-cavity formed by a nano-tip. Through atomic scale control of mode volume we demonstrate switching and modulation of coupling strength.
Engineering of Room Temperature Spin Defects in Hexagonal Boron Nitride
Authors: Kianinia Mehran , White Simon , Fröch Johannes E. , Bradac Carlo , Aharonovich Igor
Published: August 2021

We show a fabrication method based on ion implantation technique to create negatively charged boron vacancy centers in hexagonal boron nitride with optically addressable spin. Moreover, we elucidate additional optical properties of these defects.
High-Power Ultraviolet Vortex Beams Generated from a Relativistic Laser Interacting with an Ultrathin Foil
Authors: Fasano N. M. , Mikhailova J. M.
Published: August 2021

Ultrathin foils irradiated by relativistic circularly polarized lasers emit harmonics in both the transmitted and reflected directions that contain orbital angular momentum. We demonstrate this scheme using ab-initio three-dimensional particle-in-cell simulations.
Hard X-ray–Optical Transient Grating
Authors: Peters William , Jones Travis , Song Sanghoon , Chollet Matthieu , Robinson Joseph , Foglia Laura , Bencivenga Filippo , Coffee Ryan , Bowlan Pamela
Published: August 2021

We present hard x-ray-pump, optical-probe transient grating measurements. A split-and-delay line generates an interference pattern; subsequently an optical probe diffracts from the excited sample. Both the x-ray-x-ray delay and the x-ray-optical delay were varied.
Chiral solid-state high-harmonic generation and spectroscopy with polarization-tailored strong fields
Authors: Heinrich Tobias , Taucer Marco , Kfir Ofer , Corkum P. B. , Staudte André , Ropers Claus , Sivis Murat
Published: August 2021

We generate circularly polarized high harmonics from solids by matching the laser’s three-fold symmetries with those of the crystal. The chiral harmonic radiation probes the ferromagnetic surface states formed in magnesium oxide by spontaneous chiral-symmetry-breaking.
Enhanced second-harmonic generation in Mie-resonant MoS2 nanodisks
Authors: Popkova A.A. , Antropov I.M. , Tselikov G.I. , Bedu F. , Ozerov I. , Arsenin A.V. , Volkov V.S. , Bessonov V.O. , Fedyanin A.A.
Published: August 2021

Enhanced second-harmonic generation in a single MoS2 nanodisk due to the overlap of Mie resonances at the fundamental wavelength with the C-exciton resonance at the second-harmonic wavelength is observed.
Broadband-Tunable Third-Harmonic Generation Using Phase-Change Chalcogenides
Authors: Zhu Muliang , Abdollahramezani Sajjad , Li Chentao , Fan Tianren , Harutyunyan Hayk , Adibi Ali
Published: August 2021

We demonstrate a Ge2Sb2Te5 (GST)-based asymmetric Fabry-Perot cavity facilitating broadband continuous tuning of third-harmonic generation (THG) due to the nonvolatile high refractive-index contrast amorphous, semi-crystalline, and crystalline GST phases.
Third-harmonic generation enhanced by topological corner states in valley-Hall dielectric metasurfaces
Authors: Kruk Sergey , Gao Wenlong , Choi Duk Yong , Zentgraf Thomas , Zhang Shuang , Kivshar Yuri
Published: August 2021

We design numerically, then fabricate and study experimentally optical valley-Hall resonant dielectric metasurfaces placed on a mirror for topology-empowered third-harmonic generation from subwavelength topological edge and corner states.
Topological plasmonics: Ultrafast vector movies of plasmonic skyrmions on the nanoscale
Authors: Giessen Harald , Davis Tim , Heringdorf Frank Meyer zu , Frank Bettina , Janoschka David , Dreher Pascal
Published: August 2021

We introduce a new technique, namely time-resolved vector microscopy, that enables us to compose entire movies on a sub-femtosecond time scale and a 10 nm scale of the electric field vectors of surface plasmon skyrmions.
Observation of coupling between topological and topology-entailed states
Authors: Piccioli Francesco S. , Kremer Mark , Maczewsky Lukas J. , Heinrich Matthias , Carusotto Iacopo , Szameit Alexander
Published: August 2021

We construct Topology-Entailed Trivial (TET) states from superpositions of counter-propagating topological interface states. The topological origin of these novel entities and their potential as gateway for the interaction with topologically-protected edge states are illustrated.
Spinful Photonic Higher Order Topological Insulators in the Presence of Spin Orbit Coupling
Authors: Gladstone Ran Gladstein , Jung Minwoo , Shvets Gennady
Published: August 2021

Four spinful photonic C6 photonic higher-order topological insulators are investigated. We show that two are robust to spin-orbit coupling while two are not. We derive a new invariant to predict this effect on corner states.
Modal crosstalk suppression using digital multi-probe time reversal through free-space turbulence and multimode fiber
Authors: Zhou Yiyu , Zhao Jiapeng , Braverman Boris , Zhang Runzhou , Pang Kai , Fyffe Alexander , Willner Alan E. , Shi Zhimin , Boyd Robert W.
Published: August 2021

We demonstrate that digital multi-probe time reversal can effectively suppress crosstalk for mode-division multiplexing. The performance of multi-probe time reversal is experimentally characterized over a 340-m free-space link and a 1-km standard multimode fiber.
Performance Analysis of Free-space Quantum Key Distribution Using Multiple Spatial Modes
Authors: He Wenhua , Guha Saikat , Shapiro Jeffrey H. , Bash Boulat A.
Published: August 2021

We present a flat-top focused-beam spatial multiplexing scheme for quantum key distribution. It captures a significant fraction of the multiplexing rate gain in vacuum transmission, and outperforms OAM-bearing modes in turbulence.
Site-Controlled and Optically Accessible Single Spins in van der Waals Heterostructures
Authors: Mukherjee Arunabh , Shayan Kamran , Li Lizhong , Shan Jie , Mak Kin Fai , Vamivakas A. Nick
Published: August 2021

Single spin arrays can serve as a scalable qubit platform. Here, we report the observation of arrays of single spins which are optically accessible through strain-induced localized positive trions residing in WSe2/CrI3 heterostructures.
Time-resolved ARPES of excitons in a 2D semiconductor
Authors: Madéo Julien , Man Michael K. L. , Sahoo Chakradhar , Campbell Marshall , Pareek Vivek , Wong E Laine , Al-Mahboob Abdullah , Chan Nicholas S. , Karmakar Arka , Mariserla Bala Murali Krishna , Li Xiaoqin , Heinz Tony F. , Cao Ting , Dani Keshav M.
Published: August 2021

We use a table-top time-resolved ARPES based on a MHz XUV source to directly observe direct and momentum-forbidden excitons in the full first Brillouin zone of WSe2 monolayer and measure their ultrafast dynamics.
Directly visualization of excitonic wavefunction in 2D semiconductors by angle resolved photoemission spectroscopy
Authors: Man Michael K. L. , Madéo Julien , Sahoo Chakradhar , Xie Kaichen , Campbell Marshall , Pareek Vivek , Karmakar Arka , Wong E Laine , Al-Mahboob Abdullah , Chan Nicholas S. , Bacon David R. , Zhu Xing , Abdelrasoul Mohamed , Li Xiaoquin , Heinz Tony F. , da Jornada Felipe H. , Cao Ting , Dani Keshav M.
Published: August 2021

Using time- and angle-resolved photoemission spectroscopy on a microscopic sample of a 2D semiconductor, we visualized directly the excitonic wavefunction in real- and momentum-space.
Terahertz Generation from Curved Two-Color Filaments Induced by 2D Airy Wave Packets
Authors: Koulouklidis Anastasios D. , Mansour Dimitris , Papazoglou Dimitris G. , Tzortzakis Stelios
Published: August 2021

We report on THz generation from curved filaments produced by 2D Airy wave packets. Due to the curvature of the plasma channel, non-concentric THz beams with different polarizations are generated.
Overcoming the Manley-Rowe Limit for CW Terahertz Generation in Q-Engineered Multimodal Cavity
Authors: Salamin Yannick , Roques-Carmes Charles , Lin Zin , Johnson Steven G. , Soljačić Marin
Published: August 2021

We present a method to overcome the Manley-Rowe limit in a Q-factor engineered multimodal nonlinear cavity. Cascading nonlinear processes enable continuous-wave terahertz generation with a theoretical conversion efficiency of 98.8%.
Ultrafast THz Self-action Graphene Based Modulators
Authors: Koulouklidis Anastasios D. , Kyriakou Eudokia , Daskalaki Christina , Ergoktas M. Said , Tasolamprou Anna C. , Kafesaki Maria , Kocabas Coskun , Tzortzakis Stelios
Published: August 2021

We demonstrate an ultrafast self-induced terahertz absorption modulator operating at 2.3 THz. A modulation of 50 dB is observed in the absorption when the THz field strength increases from 145 to 654 kV/cm.
Toward a Tunable VUV Frequency Comb for 229mTh Nuclear Spectroscopy
Authors: Zhang Chuankun , Li Peng , Jiang Jie , von der Wense Lars , Fermann Martin E. , Ye Jun
Published: August 2021

We constructed a Yb:fiber frequency comb for the generation of a vacuum-ultraviolet frequency comb via 7th harmonic generation. The spectral coverage and the noise performance of this comb are tailored for probing the 229
m
Th nuclear transition.
Exceptional point dispersion engineering
Authors: Dorche Ali Eshaghian , Miri Mohammad Ali , Eftekhar Ali Asghar , Adibi Ali
Published: August 2021

Exceptional points formed in a coupled optical microresonator structure with unbalanced decay rates are studied for dispersion engineering. Combined with oscillating coupling coefficients in the coupled-resonator architecture, periodic exceptional points are formed, providing additional degrees of freedom for narrow-band dispersion modification.
Exceptional points in a time-delayed anti-parity-time symmetric system
Authors: Wilkey Andrew , Joglekar Yogesh N. , Vemuri Gautam
Published: August 2021

We report on the experimental realization of an anti-PT symmetric system in a pair of time-delay coupled semiconductor lasers, and via numerical and analytical modeling investigate the properties of exceptional points in it.
Walk-off Induced Dissipative Quadratic Solitons in Degenerate Optical Parametric Oscillators
Authors: Roy Arkadev , Nehra Rajveer , Jahani Saman , Ledezma Luis , Langrock Carsten , Fejer Martin , Marandi Alireza
Published: August 2021

We demonstrate quadratic soliton formation in a synchronously pumped degenerate optical parametric oscillator displaying significant pulse compression leading to the formation of femtosecond pulses at half-harmonic from picosecond pump pulses.
Compact Incoherent Spatial Frequency Filtering Enabled by Metasurface Engineering
Authors: Hazineh Dean S. , Guo Qi , Shi Zhujun , Huang Yao-Wei , Zickler Todd , Capasso Federico
Published: August 2021

A single-lens implementation of optoelectronic spatial frequency filtering for incoherent illumination is demonstrated utilizing metasurface engineering. By inverse-designing the phase on the metasurface, arbitrarily structured 2D filters are realized for depth-invariant, broadband operation.
Cascaded Metasurface Holograms for Optical Secret Sharing
Authors: Georgi Philip , Qunshuo Wei , Sain Basudeb , Schlickriede Christian , Wang Yongtian , Huang Lingling , Zentgraf Thomas
Published: August 2021

We demonstrate an all-optical solution for secret sharing based on metasurface holography. Metasurfaces are used as separable shares that reconstruct a secret after combination. The inherent alignment sensitivity can be used to build optical rulers.
Color Splitting Micro-metalenses for High-sensitivity Color Image Sensors
Authors: Miyata Masashi , Nemoto Naru , Shikama Kota , Kobayashi Fumihide , Hashimoto Toshikazu
Published: August 2021

We demonstrate polarization-independent micro-metalenses that sort primary colors within a high-density-pixel footprint. We also show their potential applicability to high-sensitivity color image sensors.
Terahertz achromatic in Airy beams and focusing
Authors: Cheng Qingqing , Ma Ling , Wang Juncheng , Zhuang Songlin
Published: August 2021

The phase responses of the adopted resonating meta-atoms typically exhibit Lorentz-like frequency dispersion, therefore such metadevices can usually work only at a narrow band frequency. Here, we design and fabricate a metasurface composed of silicon posts for the terahertz frequencies in transmission mode, and we experimentally demonstrate achromatic Airy beams and achromatic focusing.
Symmetry protection against mode crossings in multimode photonic resonator chains
Authors: Tikan A. , Tusnin A. , Riemensberger J. , Churaev M. , Komagata K. , Ji X. , Wang R. N. , Liu J. , Kippenberg T. J.
Published: August 2021

The accessibility of solitons in driven-dissipative photonic dimers drastically varies for different supermode families. We explain the origin of this phenomenon and show its crucial influence on any soliton lattice configuration including topological arrangements.
Soliton slingshot in over-moded microresonators
Authors: Tan Teng , Chen Hao-Jing , Yuan Zhongye , Yu Yan , Cao Qi-Tao , Zhang Hao , Du Junting , Wong Chee Wei , Rao Yunjiang , Xiao Yun-Feng , Yao Baicheng
Published: August 2021

Leveraging the avoid mode couplings in microsphere resonators, we demonstrated fast soliton slingshot intracavity. Its soliton access range reaches 8 GHz, with success possibility > 90% and single soliton ratio > 60%.
Topological Viscous Hall Plasmons in Graphene
Authors: Sun Wenbo , Van Mechelen Todd , Boddeti Ashwin K. , Tepole Adrian Buganza , Alaeian Hadiseh , Jacob Zubin
Published: August 2021

Graphene’s viscous Hall fluid is the first candidate for a non-local topological electromagnetic phase of matter. Here, we demonstrate unidirectional topological viscous Hall plasmons and an ultra sub-wavelength topological circulator based on them.
Noiseless Attenuation of Nonclassical States of Light
Authors: Shringarpure Saurabh U. , Nunn Cory M. , Pittman Todd B. , Franson James D.
Published: August 2021

Attenuating a quantum state using a beam splitter will introduce noise and decoherence. Here we show that heralding techniques can be used to attenuate number states or Schrödinger cat states without any noise or decoherence.
Experimental Noiseless Attenuation with Heralding on Zero Photons
Authors: Nunn Cory M. , Franson James D. , Pittman Todd B.
Published: August 2021

Heralded noiseless attenuation is theoretically achievable with linear optics and an uncommon measurement of zero photons in an auxiliary mode. We review this phenomenon and describe experimental progress toward demonstrating it in two physical systems.
Electrically Actuated Varifocal Lens Based on a Liquid-crystal-encapsulated Semiconductor Metasurface
Authors: Bosch Melissa , Won Kanghee , Lee Hong-Seok , Shcherbakov Maxim R. , Shvets Gennady
Published: August 2021

An ultrathin electrically controlled varifocal lens based on a liquid crystal encapsulated semiconductor metasurface is demonstrated. Owing to their ultrathin thickness and adaptable design, LC-driven semiconductor metasurfaces offer new prospects for modern imaging technologies.
Building Multi-functional Meta-optic Systems through Deep Learning
Authors: Zhu Dayu , Liu Zhaocheng , Raju Lakshmi , Kim Andrew S. , Cai Wenshan
Published: August 2021

We develop a deep learning framework for the design of large-scale, multi-layered, multi-functional meta-optic systems. We demonstrate designed examples of a dual-functional beam generator, an all-optical second-order differentiator, and a space-polarization-wavelength multiplexed hologram.
High-Efficiency Compound Metaoptics for Independent Amplitude and Phase Control
Authors: Raeker Brian O. , Zheng Hanyu , Zhou You , Valentine Jason , Grbic Anthony
Published: August 2021

We demonstrate multi-metasurface devices with high efficiency that provide independent amplitude and phase control across an optical wavefront. Experimental results of metaoptics implementing a three-dimensional point source hologram are reported.
Helicity-resolved Pump-Probe Observation of Biexciton Fine Structures in Monolayer Molybdenum Ditelluride
Authors: Tang Jiacheng , Sun Hao , Zhang Qiyao , Dai Xingcan , Wang Zhen , Ning Cun-Zheng
Published: August 2021

A series of biexciton fine structures were directly observed in monolayer MoTe2 through helicity-resolved resonant pump-probe spectroscopy, in good agreement with our theoretical calculations of transient absorption spectra by solving the four-body Bethe-Salpeter Equation.
Tailoring Coulomb correlations in twisted WSe2 bilayers
Authors: Merkl Philipp , Mooshammer Fabian , Brem Samuel , Girnghuber Anna , Lin Kai-Qiang , Weigl Leonard , Yong Chaw-Keong , Gillen Roland , Maultsch Janina , Lupton John M. , Malic Ermin , Huber Rupert
Published: August 2021

Phase-locked few-cycle mid-infrared pulses trace how the twist angle alone renormalizes the binding energy of excitons in twisted WSe2 homobilayers by a factor of two and tunes their lifetime by a factor of twenty.
Sub-7-femtosecond conical-intersection dynamics probed at the carbon K-edge
Authors: Zinchenko Kristina S. , Ardana-Lamas Fernando , Seidu Issaka , Neville Simon , van der Veen Joscelyn , Lanfaloni Valentina Utrio , Schuurman Michael S. , Wörner Hans Jakob
Published: August 2021

We present a novel soft X-ray high-harmonic setup and demonstrate the first realization of attosecond transient-absorption spectroscopy at the carbon K-edge, revealing the fastest electronic-relaxation dynamics measured to date.
Mid-IR supercontinua in dispersion-engineered As2S3-silica nanospike waveguides pumped by fs pulses at 2.8 μm
Authors: Wang Pan , Huang Jiapeng , Xie Shangran , Troles Johann , Russell Philip St.J.
Published: August 2021

We report generation of coherent octave-spanning mid-infrared supercontinua in As2S3-silica waveguides pumped by a custom-built 2.8 μm femtosecond fiber laser. The fabricated hybrid waveguides are demonstrated to be long-term stable and water-resistant.
Establishing a rigorous relation between thermodynamic and electrodynamic pressures in highly multimoded nonlinear dielectric waveguides
Authors: Ren Huizhong , Wu Fan O. , Jung Pawel , Efremidis Nikolaos K. , Khajavikhan Mercedeh , Christodoulides Demetrios N.
Published: August 2021

We present a new scaling law that relates the thermodynamic pressure with the electrodynamic forces in multimode nonlinear dielectric waveguides. Our results are in exact agreement with those obtained using the Maxwell stress tensor formalism.
Photonic Topological Insulators Controlled by Nonlocal Nonlinearity in Synthetic Dimensions
Authors: Levy Liat Nemirovsky , Cohen Moshe-Ishay , Segev Mordechai
Published: August 2021

We study nonlinear effects in synthetic space photonic topological insulators. This nonlinearity is nonlocal in the synthetic dimensions. We study time-periodic solitons making a cyclotron-like motion in the synthetic space bulk.
Two-Dimensional Floquet Topological Insulator with PT-Symmetry
Authors: Fritzsche Alexander , Kremer Mark , Maczewsky Lukas J. , Joglekar Yogesh N. , Heinrich Matthias , Thomale Ronny , Szameit Alexander
Published: August 2021

We present a theoretical proposal for a two-dimensional PT-symmetric topological insulator (TI) that supports two counter-propagating topologically protected boundary states and discuss ongoing experiments to confirm the theoretical predictions.
Dynamical Topological Phase Transitions in Nonlinear Su-Schrieffer-Heeger Lattices via Soliton Interactions
Authors: Bongiovanni Domenico , Jukić Dario , Hu Zhichan , Lunić Frane , Hu Yi , Song Daohong , Morandotti Roberto , Chen Zhigang , Buljan Hrvoje
Published: August 2021

We demonstrate dynamical topological phase transitions entirely driven by nonlinearity, which constitute an example of emergent nonlinear topological phenomena. These transitions in our system occur due to soliton interactions forming Su-Schrieffer-Heeger lattices.
Gradient Index Subsurface Micro-Optics
Authors: Littlefield Alexander J. , Richards Corey A. , Ocier Christian R. , Xie Dajie , Gao Haibo , Braun Paul V. , Goddard Lynford L.
Published: August 2021

We present an overview of a new method to print 3D volumetric gradient index (GRIN) micro-optics inside a porous silica scaffold and show results for the focusing properties of an array of cylindrical GRIN lenses.
High Performance Silicon Flat Optics at Visible Wavelengths
Authors: Burguete-Lopez Arturo , Makarenko Maksim , Getman Fedor , Fratalocchi Andrea
Published: August 2021

We present a platform for the design of high efficiency flat optics. Experimentally, we show common components such as polarizers, dichroics, and color filters with over 99% efficiency in the visible in 50nm of silicon.
Controlling All-optical Switching Speeds in an Epsilon-Near-Zero Enhanced Metasurface
Authors: Saha Soham , Diroll Benjamin , Chowdhury Sarah N. , Kildishev Alexander V. , Schaller Richard , Jacob Zubin , Shalaev Vladimir M. , Boltasseva Alexandra
Published: August 2021

We propose a novel approach to control the speed of all-optical switches. In an epsilon-near-zero-metasurface comprising materials with picosecond- and nanosecond-switching-timescales, the switching-speed is controlled by the material interacting more strongly with the probe.
Towards strong-coupling regime in singular site-controlled InGaAs quantum dots-nanocavities
Authors: Liu Wei , Huang Jiahui , Miranda Alessio , Dwir Benjamin , Rudra Alok , Kapon Eli , Wong Chee Wei
Published: August 2021

We demonstrate the cavity quantum electrodynamics towards strong-coupling regime mediated by cavity loss and exciton pure dephasing in singular site-controlled quantum dot-nanocavity system, studied by micro-photoluminescence (μ-PL) and time-resolved PL (TRPL).
Impedance-matched differential SNSPDs for practical photon counting with sub-10 ps timing jitter
Authors: Colangelo Marco , Beyer Andrew , Korzh Boris , Allmaras Jason P. , Mueller Andrew , Briggs Ryan M. , Bumble Bruce , Runyan Marcus , Stevens Martin J. , McCaughan Adam , Zhu Di , Smith Steve , Becker Wolfgang , Narváez Lautaro , Bienfang Joshua C. , Frasca Simone , Velasco Angel E. , Ramirez Edward , Walter Alexander , Schmidt Ekkehart , Wollman Emma E. , Peña Cristián , Spiropulu Maria , Mirin Richard P. , Nam Sae Woo , Berggren Karl K. , Shaw Matthew D.
Published: August 2021

We demonstrate large-area superconducting nanowire single-photon detectors (SNSPDs) with simultaneous high system detection efficiency and low system jitter. We describe the device architecture and discuss optimal readout setup for practical applications.
Shot-Noise Limited Hot Electron Bolometer Integrated on Silicon-On-Insulator Photonics
Authors: Martini F. , Cibella S. , Gaggero A. , Mattioli F. , Leoni R.
Published: August 2021

Shot-noise limited (SNL) detectors that can be integrated on several photonic platforms are essential for photonic quantum technologies. We integrated small-area Hot Electron Bolometers on SOI photonics, demonstrating SNL operations with only 1.1μW of input power.
On-chip integration of reconfigurable quantum photonics with superconducting photodetectors
Authors: Gyger Samuel , Zichi Julien , Schweickert Lucas , Elshaari Ali W. , Steinhauer Stephan , Covre da Silva Saimon F. , Rastelli Armando , Zwiller Val , Jöns Klaus D. , Errando-Herranz Carlos
Published: August 2021

Scaling up quantum optics experiments requires on-chip reconfigurable quantum photonics, but their integration with detectors is a challenge. We show microelectromechanical reconfiguration of photonic circuits with on-chip superconducting single–photon detectors and demonstrate key applications.
Splitting exceptional points by photon-number resolved detection of multi-mode coherent states
Authors: Tschernig Konrad , Perez-Leija Armando , Busch Kurt
Published: August 2021

We show theoretically that lossy waveguide systems exhibit exceptional points, whose order is enhanced by the photon number resolved detection of their coherent exceptional modes.
Super-linear Behavior of Exciton Emission in Electrically-gated Two-dimensional Material
Authors: Wang Zhen , Sun Hao , Zhang Qiyao , Zhang Jianxing , Xu Jialu , Tang Jiacheng , Ning Cun-Zheng
Published: August 2021

An abnormal super-linear (as opposed to typical linear) dependence of exciton emission intensity on pumping power was observed in an electrically-gated two-dimensional semiconductor, due to an exquisite interplay and mutual conversion between excitons and trions.
Single-Photon Radiative Auger Emission from a Quantum Dot
Authors: Spinnler Clemens , Löbl Matthias C. , Zhai Liang , Nguyen Giang N. , Javadi Alisa , Ritzmann Julian , Midolo Leonardo , Lodahl Peter , Wieck Andreas D. , Ludwig Arne , Warburton Richard J.
Published: August 2021

We report radiative Auger emission from singly-charged semiconductor quantum dots. The red-shifted satellite peaks show a single-photon nature and allow to determine single-particle splittings. Photon statistics of the emission are used to investigate singleelectron dynamics.
Unraveling and Predicting the Nonlinear-optical Refractive Response of Graphene
Authors: Vermeulen Nathalie , Thienpont Hugo , Castelló-Lurbe David
Published: August 2021

Graphene exhibits a strong nonlinear-optical refractive response to light pulses, but its impact on the pulses' spatiotemporal evolution is challenging to analyze and predict. We solve this issue using non-perturbative calculations and spectral broadening experiments.
Second Harmonic Generation from a Single Plasmonic Nanorod Strongly Coupled to a WSe2 Monolayer
Authors: Li Chentao , Lu Xin , Srivastava Ajit , Storm S. David , Gelfand Rachel , Pelton Matthew , Sukharev Maxim , Harutyunyan Hayk
Published: August 2021

By observing a pronounced splitting in the second harmonic signal, we report the first experimental investigation of the nonlinear properties of a strongly coupled system consisting of a WSe2 monolayer and a single gold nanorod.
Hybrid Bistability in Nano-opto-mechanical Metamaterial
Authors: Papas Dimitrios , Ou Jun-Yu , Plum Eric , Zheludev Nikolay I.
Published: August 2021

A nanowire array decorated with plasmonic resonators acts as optically bistable device. The optical properties of this metamaterial exhibit hysteresis and bistability when it is driven by a piezo actuator across its mechanical resonance frequency.
Optical Thermalization in Highly Multimoded Integrated Nonlinear 2D Photonic Membrane Systems
Authors: Bahari B. , Choi J-H. , Benis S. A. , Jung P. S. , Wu F. O. , Christodoulides D. N. , Khajavikhan M.
Published: August 2021

We study optical thermalization dynamics in integrated photonic coupled-cavity arrangements on a Si3N4 platform. We show that isolated photonic bandgap modes can reach positive or negative temperatures that can be predicted effortlessly using optical thermodynamics.
Machine Learning Derived Entanglement Witnesses
Authors: Wu Larry T.H. , Zhu Eric Y. , Qian Li
Published: August 2021

We demonstrate a correspondence between linear support vector machines (SVM) and entanglement witnesses, and use this correspondence to generate entanglement witnesses for bipartite qubit, tripartite qubit, and bipartite qutrit systems.