bluuebunny/crossref_metadata_2025 huggingface dataset:
Enhanced Harmonic Generation in Disordered and Random Mie-resonant Metasurfaces
Authors: Vabishchevich Polina P. , Addamane Sadhvikas , Reno John L. , Brener Igal , Agrawal Amit , Lezec Henri J.
Published: August 2022

We use disordered and random Mie-resonant metasurfaces to eliminate diffraction of harmonic generation to potentially improve the nonlinear signal collection efficiency compared to harmonic generation obtained from periodic metasurfaces with equivalent nanoresonator dimensions.
Chiral Sensing with Semiconductor Nanophotonics
Authors: Curto Alberto G.
Published: August 2022

Detecting molecular chirality is crucial in biochemistry. It is, however, limited by low sensitivity at low concentrations. I will discuss our progress to push the limits of chiral sensing by exploiting semiconductor nanophotonics.
Controlling thermal radiation with a phase-change metasurface
Authors: Singh Leena , Qiu Erbin , Cardin Andrew E. , Chen Aiping , Dalvit Diego A. R. , Schuller Ivan K. , Luk Ting S. , Schuller Jon A. , Kort-Kamp Wilton J. M. , Azad Abul K.
Published: August 2022

We demonstrate a VO2 based phase-change metasurface that self regulates its emissivity in response to the ambient temperature. The mid-infrared emissivity increases to near unity when operating above the insulator-to-metal phase transition temperature of VO2.
Design and Fabrication of Vanadium Dioxide Metasurfaces for Continuous Optical Wavefront Tuning
Authors: Oguntoye Isaac O. , Padmanabha Siddharth , Koutsougeras Thalia , Hinkle Max , Escarra Matthew D.
Published: August 2022

We design and fabricate vanadium dioxide metasurfaces for dynamic optical amplitude, phase, and beam angle modulation. Temperature-dependent ellipsometry yields a refractive index modulation of ~1.8. Metasurface optical modulation of ~17 dB is projected with near π phase tuning.
Spectral Shaping In a Multimode Fiber By All-Fiber Modulation
Authors: Finkelstein Zohar , Sulimany Kfir , Resisi Shachar , Bromberg Yaron
Published: August 2022

We experimentally demonstrate spectral shaping in a multimode fiber by macro-bend based transmission matrix engineering. We implemented an all-fiber reconfigurable narrowband single-and dual-window bandpass filters.
Optical observation of single spins in silicon
Authors: Higginbottom Daniel B. , Kurkjian Alex T. K. , Chartrand Camille , Kazemi Moein , Brunelle Nicholas A. , MacQuarrie Evan R. , Klein James R. , Lee-Hone Nicholas R. , Stacho Jakub , Ruether Myles , Bowness Camille , Bergeron Laurent , DeAbreu Adam , Harrigan Steven R. , Kanaganayagam Josh , Richards Timothy S. , Stott Leea A. , Roorda Sjoerd , Morse Kevin J. , Thewalt Michael L. W. , Simmons Stephanie
Published: August 2022

The silicon T centre combines long spin coherence times and telecommunications-band optical transitions. We integrate T centres with silicon photonic devices and measure the first all-optical single spin qubit in silicon, establishing a new spin-photon platform.
Quantum Control of the Tin-Vacancy Spin Qubit in Diamond
Authors: Debroux Romain , Michaels Cathryn P. , Purser Carola M. , Wan Noel , Trusheim Matthew E. , Martènez Jesús Arjona , Parker Ryan A. , Stramma Alexander M. , de Santis Lorenzo , Alexeev Evgeny M. , Ferrari Andrea C. , Englund Dirk , Gangloff Dorian A. , Atatüre Mete
Published: August 2022

Group-IV colour centres in diamond are a promising light-matter interface for quantum networking devices. We demonstrate multiaxis coherent control of the SnV spin-qubit via an all-optical stimulated Raman drive between the ground and excited states.
Investigation of Resonant Excitation and Stark Tuning of Negatively Charged Tin-Vacancy Centers in Diamond
Authors: Lee Hope , Grzesik Jakob , Riedel Daniel , Rugar Alison , Aghaeimeibodi Shahriar , Dory Constantin , Vučković Jelena
Published: August 2022

We present a study on the resonant excitation and electrical Stark tuning of negatively charged tin-vacancy (SnV−) defect centers in diamond.
Piezoelectric control of spin quantum memories in a cryogenic programmable photonic circuit platform
Authors: Clark Genevieve , Koppa Matthew , Chen Kevin , Leenheer Andrew , Li Linsen , Dominguez Daniel , Dong Mark , Saha Matthew , Golter D. Andrew , Gilbert Gerald , Eichenfield Matt , Englund Dirk
Published: August 2022

We demonstrate piezoelectric strain control of diamond tin vacancy defects in cryogenic photonic integrated circuits fabricated in a 200 mm CMOS platform, enabling frequency tuning and control bandwidth above 20 GHz and 2 GHz, respectively.
Optically Induced Static Magnetic Field for Nitrogen-vacancy Centers in Diamond
Authors: Kalhor Farid , Mahmud Shoaib , Opondo Noah F , Bauer Leif , Das Pronoy , Yang Li-Ping , Bhave Sunil , Jacob Zubin
Published: August 2022

We demonstrate a room-temperature optically induced magnetic field for nitrogen-vacancy centers in diamond. The effective magnetic field i s d etermined b y the photonic spin density of a red-detuned optical excitation. This opens a new frontier for studying exotic phases of photons as well as future on-chip applications.
High-contrast spin defects in hexagonal boron nitride with plasmonic enhancement
Authors: Li Tongcang , Gao Xingyu , Jiang Boyang , Llacsahuanga Allcca Andres E. , Shen Kunhong , Sadi Mohammad A. , Solanki Abhishek B. , Ju Peng , Xu Zhujing , Upadhyaya Pramey , Chen Yong P. , Bhave Sunil A.
Published: August 2022

We report high-contrast (as high as 46%) optically detected magnetic resonance of boron vacancy spin defects in hexagonal boron nitride. We also observed plasmonic enhancement and hyperfine splitting of these spin defects.
Coherence properties of a thermalized highly multimoded nonlinear parabolic fiber
Authors: Selim Mahmoud A. , Wu Fan O. , Pyrialakos Georgios G. , Christodoulides Demetrios
Published: August 2022

We investigate the coherence characteristics of the parabolic fiber by utilizing optical thermodynamic theory. Our analysis indicates that the mutual correlation function can be related to the optical temperature and the corresponding chemical potential.
Light-Induced Density Shockwave Interaction in Opaque Nanosuspension
Authors: Sun Jeccy , Patsyk Anatoly , Nemirovksy Jonathan , Segev Mordechai
Published: August 2022

We study experimentally and theoretically the interactions between two optically-induced density shockwaves in colloidal nanosuspensions, and find interaction features of annihilation, merging, and domain walls formation, determined by the shock fronts and the proximities between shockwaves.
Time-reflection beyond the critical angle
Authors: Bar-Hillel Lior , Dikopoltsev Alex , Sharabi Yonatan , Lustig Eran , Shmuel Amir , Segev Mordechai
Published: August 2022

We study the time reflection of evanescent fields beyond the critical angle of total internal reflection, caused by a sudden temporal change in permittivity. We find high sensitivity of the time-reflection near the critical angle.
Violating Kirchhoff’s Law of Thermal Radiation in Semitransparent Structures
Authors: Park Yubin , Asadchy Viktar S. , Zhao Bo , Guo Cheng , Wang Jiahui , Fan Shanhui
Published: August 2022

We design a nonreciprocal thermal emitter that features absorptivity-emissivity contrast in semitransparent setting, by using magneto-optical effect. Our emitter can overcome the restriction that Kirchhoff’s law of thermal radiation imposes on solar energy harvesting.
Electron phase-space control in photonic chip-based particle acceleration
Authors: Kraus S. , Shiloh R. , Illmer J. , Chlouba T. , Yousefi P. , Schönenberger N. , Niedermayer U. , Mittelbach A. , Hommelhoff P.
Published: August 2022

We demonstrate complex electron phase-space control in a 77.7 micrometer long silicon-based nanostructure. This low-loss electron transport scheme is a prerequisite to the future mega-electron-volt electron accelerator on a photonic chip.
Humidity- and Temperature- Stimuli-Responsive Tunable Metal-Hydrogel-Metal Reflective Filter
Authors: Chervinskii Semyon , Issah Ibrahim , Lahikainen Markus , Rashed Alireza R. , Kuntze Kim , Priimagi Arri , Caglayan Humeyra
Published: August 2022

Our work demonstrates a tunable reflectance filter based on a metal-hydrogel-metal structure responsive to humidity and temperature. The filter employs a hydrogel as an insulating layer. Swelling/deswelling and the volume phase transition of the hydrogel allow continuous reversible humidity- and/or temperature-induced tuning of the optical resonance.
Ultrafast free-electron probing of photon statistics inside a laser cavity
Authors: Wang Kangpeng , Rivera Nicholas , Dahan Raphael , Kaminer Ido
Published: August 2022

We propose using the quantum interaction of free electrons with light to measure the photon statistics inside laser cavities. This approach has unprecedented spatiotemporal resolution, which could resolve fundamental questions associated with many laser systems.
Generation of Photon Pairs in Linearly Uncoupled Resonators Employing a Reconfigurable Mach-Zehnder Interferometer
Authors: Gianini L. , Sabattoli F. A. , El Dirani H. , Youssef L. , Garrisi F. , Zatti L. , Petit-Etienne C. , Pargon E. , Liscidini M. , Sciancalepore C. , Bajoni D. , Galli M.
Published: August 2022

We demonstrate spontaneous four-wave mixing in two linearly uncoupled resonators employing a Mach-Zehnder interferometer capable of wide band (>150 nm) operation and a fourfold improvement in the generation rate with respect to previous configurations.
A Nanophotonic Broadband Quantum Optical Frequency Comb
Authors: Javid Usman A. , Ling Jingwei , Lopez-Rios Raymond , He Yang , Lin Qiang
Published: August 2022

We demonstrate generation of a broadband quantum optical frequency comb using spontaneous parametric down-conversion in a dispersion-engineered thin-film lithium niobate resonator spanning 30-THz bandwidth and 600 comb lines at 50-GHz mode spacing.
Single-photon frequency shifting using coupled microring resonators on thin-film lithium niobate
Authors: Yeh Matthew , Xin C. J. , Hu Yaowen , Ghosh Soumya , Beyer Andrew , Wollman Emma , Shaw Matthew D. , Sinclair Neil , Hu Evelyn L. , Zhu Di , Lončar Marko
Published: August 2022

We frequency shift single photons by 18.2 GHz using coupled thin-film lithium niobate microring resonators controlled by a single-tone microwave signal, and characterize the indistinguishability of the shifted and unshifted photons using Hong-Ou-Mandel interference. A visibility of 74 ± 0.9% is achieved.
Electron-photon correlations induced at a photonic integrated microresonator
Authors: Feist Armin , Huang Guanhao , Arend Germaine , Yang Yujia , Henke Jan-Wilke , Raja Arslan Sajid , Kappert F. Jasmin , Wang Rui Ning , Lourenço-Martins Hugo , Liu Junqiu , Kfir Ofer , Kippenberg Tobias J. , Ropers Claus
Published: August 2022

We couple free electrons to optical cavity modes of a chip-based high-Q silicon nitride microresonator and observe single-particle correlations. Mode-specific cathodoluminescence is spatially mapped, and coincidence-gated electron imaging enables a two-orders of magnitude contrast enhancement.
Submegahertz spectral width photon-pair source based on fused silica microspheres
Authors: Ricardo Erasto Ortiz , Bertoni-Ocampo Cesar , Maldonado-Terrón Mónica , Zurita Arturo Sanchez , Ramirez-Alarcon Roberto , Ramirez Hector Cruz , Castro-Beltrán R. , U’Ren Alfred B.
Published: August 2022

We demonstrate, and characterize, a photon-pair source based on the process of spontaneous four wave mixing in fused-silica microspheres, with single heralded photon bandwidths down to 366kHz [1].
Demonstration of Coherent Random Lasing in Optically Thin Quasi-2D Lead-halide Perovskite
Authors: Fruhling Colton , Wang Kang , Chowdhury Sarah , Kildishev Alexander , Meng Xiangeng , Dou Letian , Boltasseva Alexandra , Shalaev Vladimir M.
Published: August 2022

Random lasing in organic-inorganic lead halide quasi-2D perovskite was observed by measuring lasing threshold, spectral narrowing, spectral correlations and critical volume. The photon transport mean free path is found to be comparable to the lasing wavelength, suggesting a hybrid localized-diffusive lasing regime.
Electrically tunable nonlinear polaritonic metasurfaces for third-harmonic generation
Authors: Park Seongjin , Yu Jaeyeon , Boehm Gerhard , Belkin Mikhail A. , Lee Jongwon
Published: August 2022

We propose an electrically tunable nonlinear intersubband polaritonic metasurface for third-harmonic generation (THG). Numerically, 7300% of THG modulation depth, over 300° of local phase tuning, and dynamic THG diffraction signal modulation were achieved in mid-infrared.
Nanoscale Isolation with Circularly Polarized Stimulated Raman Scattering in a Doubly-resonant Silicon Metasurface for Subwavelength Nonreciprocity
Authors: Dixon Jefferson , Reddy Harsha , Dagli Sahil , Lawrence Mark , Dionne Jennifer
Published: August 2022

Nonreciprocal devices allow light to pass in one-direction only, which is critical for the stable operation of photonic systems, but conventional isolators remain prohibitively large. We fabricate and demonstrate metasurfaces for sub-micron nonreciprocal Raman amplification.
Electrical control of second-harmonic generation from nonlinear polaritonic metasurfaces
Authors: Yu Jaeyeon , Park Seongjin , Hwang Inyong , Boehm Gerhard , Belkin Mikhail A. , Lee Jongwon
Published: August 2022

We report nonlinear polaritonic metasurfaces with electrical control of the intensity and phase of second-harmonic-generation (SHG). Experimentally, we achieved over 2900% of SHG intensity modulation depth and beam steering from electrically induced phase gradient metasurfaces.
Thermal Metasurfaces: Selective Emission of Custom Wavefronts from a Structured Ultrathin Optical Element
Authors: Overvig Adam C. , Mann Sander A. , Alù Andrea
Published: August 2022

We demonstrate a metasurface platform based on quasibound states in the continuum capable of generating partially coherent designer wavefronts via thermal emission.
Hyperbolic metamaterial nanocavity enhanced photodetector based on 2D TMDC material
Authors: Indukuri S.R.K. Chaitanya , Frydendahl Christian , Edelstein Shahar , Mazurski Noa , Levy Uriel
Published: August 2022

We design and demonstrate experimentally nanoscale hyperbolic metamaterial cavities for enhancing the optical absorption in photodetector structures made from 2D TMDC materials. This demonstration paves the way for integrating such materials in optoelectronic applications.
Entangling Distant Atoms using Telecom Wavelengths
Authors: Fertig Florian , van Leent Tim , Bock Matthias , Garthoff Robert , Zhou Yiru , Malik Pooja , Reinl Anastasia , Zhang Wei , Becher Christoph , Weinfurter Harald
Published: August 2022

We report on the distribution of entanglement between two single-atom quantum memories generated over telecom fibers with lengths up to 33 km and propose realistic improvements for the performance-limiting atomic state coherence time.
Probing strongly coupled light-matter interactions using quantum free electrons
Authors: Karnieli Aviv , Tsesses Shai , Yu Renwen , Rivera Nicholas , Zhao Zhexin , Arie Ady , Fan Shanhui , Kaminer Ido
Published: August 2022

We propose to use free-electrons as quantum probes of strongly coupled light-matter systems. Interactions with such systems are distinctly imprinted on the electron energy spectrum, allowing for quantum detection and new photon blockade mechanisms.
Routing single photons from a trapped ion with photonic integrated circuits
Authors: Saha Uday , Siverns James D. , Hannegan John , Prabhu Mihika , Bersin Eric , Bandyopadhyay Saumil , Carolan Jacques , Quraishi Qudsia , Englund Dirk , Waks Edo
Published: August 2022

Trapped ions excel as quantum networking nodes. Here, we use integrated photonic circuits to route and directionally switch single photons emitted by an ion. This is a key step towards scalable trapped ion quantum networks.
Two-mode transduction using multimode acoustic cavities and quantum dots
Authors: Imany Poolad , Wang Zixuan , DeCrescent Ryan A , Boutelle Robert C. , Mirin Richard P. , Silverman Kevin L.
Published: August 2022

We demonstrate coherent transduction of a frequency qubit from the microwave to optical domain by means of multimode surface acoustic wave cavities coupled to an InAs quantum dot.
Mode-locked Phase Coherent Singly-Resonant Biphoton Frequency Comb
Authors: Chang Kai-Chi , Cheng Xiang , Sarihan Murat Can , Wang Wenting , Wong Franco N. C. , Shapiro Jeffrey H. , Wong Chee Wei
Published: August 2022

We observed evidence of spectral-phase-coherence in a singly-resonant biphoton frequency comb’s second-order cross-correlation function, and we verified the state’s time-energy entanglement by measuring Franson interference in 2 time-bins that violate the Bell inequality.
Heralding Single Photons using Photon-number-resolving Superconducting Nanowires
Authors: Davis Samantha I. , Mueller Andrew , Valivarthi Raju , Lauk Nikolai , Narvaez Lautaro , Korzh Boris , Beyer Andrew D. , Colangelo Marco , Berggren Karl K. , Shaw Matthew D. , Sinclair Neil , Spiropulu Maria
Published: August 2022

We improve a single photon source based on spontaneous parametric down-conversion by heralding one of the output modes using a photon number resolving superconducting nanowire detector. We measure a reduced magnitude of the second order cross correlation of one of the output modes conditioned on detection of a single photon in the other mode.
Experimental test of quantum causal influences within an instrumental process
Authors: Agresti Iris , Poderini Davide , Polacchi Beatrice , Miklin Nikolai , Gachechiladze Mariami , Suprano Alessia , Polino Emanuele , Milani Giorgio , Carvacho Gonzalo , Chaves Rafael , Sciarrino Fabio
Published: August 2022

We implement a binary-variable instrumental scenario on a photonic setup. Despite no Bell-like inequality exists for this model, we detect non-classical correlations by quantifying causal influences, which allows demonstrating discrepancies between quantum and classical predictions.
Emission from Arrays of Tm3+ Ions in Solid-State Microphotonics
Authors: Pak Dongmin , Nandi Arindam , Titze Michael , Bielejec Edward S , Alaeian Hadiseh , Hosseini Mahdi
Published: August 2022

Using an ion implantation technique, we demonstrate that precisely implanted arrays of thulium ions can be engineered to study collective and coherent light-atom interactions on solid-state lithium niobate ring resonators.
Bypassing dynamic reciprocity via a chiral cross-Kerr nonlinearity
Authors: Xia Keyu , Nori Franco , Xiao Min
Published: August 2022

The optical Kerr nonlinearity can't be used to achieve on-chip optical nonreciprocity because of dynamic reciprocity. Here, we propose a chiral cross-Kerr nonlinearity to bypass dynamic reciprocity and to achieve all-optical nonreciprocity on a chip.
Demonstration of Orbital Corner States in Higher-order Photonic Topological Insulators
Authors: Bongiovanni Domenico , Hu Zhichan , Wang Ziteng , Wang Xiangdong , Zhang Yahui , Jukić Dario , Hu Yi , Song Daohong , Morandotti Roberto , Buljan Hrvoje , Chen Zhigang
Published: August 2022

We report higher-order orbital corner states in two-dimensional Su-Schrieffer-Heeger (SSH) photonic lattices, representing an orbital HOTI model. With appropriately shaped input beams, we explore orbital corner excitations in topologically nontrivial and trivial regimes.
Topological corner states mediated by quadrupole polarization and Dirac-like band touching
Authors: Wang Xiangdong , Wang Ziteng , Hu Zhichan , Bongiovanni Domenico , Song Daohong , Morandotti Roberto , Buljan Hrvoje , Chen Zhigang
Published: August 2022

We demonstrate corner states in trivial and nontrivial 2D SSH lattices diagonally stretched to exhibit both HOTI and higher-order semimetal-like features and examine the underlying topological mechanisms from the calculated spectral phase density.
Controlling Light Emission with Photonic Funnels
Authors: LaMountain J. , Simmons E. , Muhowski A. J. , Li K. , Xu J. , Wasserman D. , Podolskiy V.A.
Published: August 2022

We analyze the interaction between a nanoscale emitter and a photonic funnel with a metamaterial core and demonstrate that funnel structures can significantly improve out-coupling efficiency of light as compared with their planar plasmonic counterparts.
An Entanglement-Based QKD System for Scalable Robust Multi-User Networks
Authors: Fitzke Erik , Dolejsky Till , Tippmann Maximilian , Bialowons Lucas , Nikiforov Oleg , Wissel Felix , Gunkel Matthias , Walther Thomas
Published: August 2022

We present entanglement-based quantum key distribution in a star-shaped network with time-bin coding. We demonstrate key exchange under typical operation conditions for metropolitan-scale networks. Without much efforts, it is scalable to more than 100 users.
Demonstration of Reference Frame Independent Time Bin Quantum Key Distribution
Authors: Tannous Ramy , Wu Wilson , Vinet Stephane , Perumangatt Chithrabhanu , Sinar Dogan , Ling Alexander , Jennewein Thomas
Published: August 2022

We present the experimental results of the first reference frame independent time bin quantum key distribution. Despite a lack of active phase stabilization of the interferometers, 0.078 asymptotic secret key bits per second were generated.
Field Demonstration of Systems Towards CubeSat Quantum Key Distribution
Authors: Hastings Elliott , Zhang Peide , Sagar Jaya , Stefko Milan , Oi Daniel K. L. , Rarity John , Joshi Siddarth K.
Published: August 2022

Satellite QKD enables quantum-secure communications at global scale. However, practical systems require high-rate, low size, weight and power photon sources and ground stations. We present systems enabling CubeSat QKD missions and demonstrate their interoperation.
Physical layer security monitoring of optical communication using a quantum pilot tone signal
Authors: Gong Yupeng , Wonfor Adrian , Hunt Jeffrey H. , Penty Richard
Published: August 2022

We demonstrate a low-complexity, quantum-level-sensitivity security monitoring system using a quantum pilot tone which is detected by an independent local oscillator, with compact data conversion acquisition units over a 10dB loss channel.
Quadrature imbalance compensation in CV-QKD
Authors: Hajomer Adnan A.E. , Jain Nitin , Chin Hou-Man , Andersen Ulrik L , Gehring Tobias
Published: August 2022

We experimentally investigate quadrature imbalance compensation using Gram-Schmidt orthogonalization procedure (GSOP) for Gaussian-modulated CV-QKD. The results show that GSOP effectively corrects for quadrature imbalance allowing the same secret key fraction performance as a CV-QKD system with zero quadrature imbalance.
Exciton-Driven Ultrafast Enhancement of Quasiparticle Bandgap and Effective Mass in Monolayer MoS2
Authors: Lin Yi , Chan Yang-hao , Lee Woojoo , Lu Li-Syuan , Li Zhenglu , Chang Wen-Hao , Shih Chih-Kang , Kaindl Robert A. , Louie Steven G. , Lanzara Alessandra
Published: August 2022

We report an ultrafast increase of the quasi-particle bandgap and effective mass in photoexcited monolayer MoS2 on HOPG, utilizing extreme-ultraviolet time- and angle-resolved photoemission spectroscopy (XUV-trARPES). Combined with theoretical models, we attribute these compelling band renormalizations to the excitonic effects from bound electron-hole pairs.
Long-lived THz-induced birefringent state in quantum paraelectric KTaO3
Authors: Li Xiaojiang , Peng Peisong , Prosandeev Sergey , Bellaiche L. , Talbayev Diyar
Published: August 2022

Abstract: We report the observation of a long-lived birefringent state in quantum paraelectric KTaO3 induced by THz pump pulses in a two-THz-photon process. We relate this long-lived state to the proximity of the ferroelectric phase transition.
Control of the coherent excitonic nonlinear response in WSe2
Authors: Meron O. , Arieli U. , Bahar E. , Deb S. , Ben-Shalom M. , Suchowski H.
Published: August 2022

We experimentally demonstrate pulse-shape-based coherent control of the A-exciton resonance in monolayer WSe2, steering the third-order nonlinear response from fully destructive to constructive interference. Our results outperform the transform-limited case by a 2.3 enhancement factor.
Towards Ultrafast, Near-Unity Light Modulation at the Few-Electron Limit Using Exciton-Trion-Polaritons
Authors: Koksal Okan , Jung Minwoo , Manolatou Christina , Shvets Gennady , Rana Farhan , Agrawal Amit
Published: August 2022

Exciton-trion-polaritons, quasiparticles with tunable, strong electron-photon coupling, are described. Devices using these quasiparticles are electrostatically controlled, and shown to be promising in realizing small-scale, ultrafast, near-unity light modulators which are otherwise difficult to realize.
Unveiling the underdamped longitudinal soft mode in paraelectric KDP by ultrafast x-ray diffraction
Authors: Gonzalez-Vallejo Isabel , Koç Azize , Reimann Klaus , Woerner Michael , Elsaesser Thomas
Published: August 2022

We present ultrafast x-ray diffraction experiments of the underdamped soft mode in paraelectric KDP. Charge density maps derived from the x-ray data reveal oscillatory electronic charge relocations over interatomic distances, much larger than the sub-picometer nuclear displacements, a hallmark of soft-mode behavior.
Measuring Topological Invariants within Dissipatively-Coupled Lattices
Authors: Parto Midya , Leefmans Christian , Williams James , Nori Franco , Marandi Alireza
Published: August 2022

We demonstrate Bloch oscillations in a dissipatively-coupled network of time-multiplexed resonators, and experimentally measure the topological invariants in open systems. This reveals the complex interplay between topology and dissipation with potential applications in quantum/classical photonics.
Photonic Higher-order Topological Orbital States and Nonlinearity-mediated Dynamical Rotation
Authors: Zhang Yahui , Bongiovanni Domenico , Xia Shiqi , Hu Zhichan , Song Daohong , Morandotti Roberto , Buljan Hrvoje , Chen Zhigang
Published: August 2022

We experimentally demonstrate photonic higher-order topological orbital corner states in laser-written breathing Kagome lattices, unveiling their charaterisitic dipole-like mode distribution and dynamical rotation in presence of optical nonlinearity.
Realization of nontrivial higher-order topological corner states in photonic graphene
Authors: Xie Yuqing , Yan Wenchao , Xia Shiqi , Liang Yongsheng , Tang Liqin , Song Daohong , Xu Jingjun , Chen Zhigang
Published: August 2022

We demonstrate nontrivial higher-order topology in photonic honeycomb lattices with different corner/edge geometries established by cw-laser-writing technique, unveiling two distinct corner states that are expected to represent features of higher-order topological Dirac semimetal.
Mapping of momentum-space topological singularities in photonic lattices with hybrid pseudospin-1 Dirac-like cones
Authors: Lei Sihong , Xia Shiqi , Wang Junqian , Song Daohong , Chen Zhigang
Published: August 2022

We experimentally demonstrate higher-order topological charge conversion, exhibiting a vortex pair of identical helicities that can be reversed altogether by selectively mapping different momentum-space topological singularities in photonic T-graphene lattices with integer pseudospin-1 Dirac-like cones.
Generation of Schrödinger Cat States with Wigner Negativity Using a Low-Loss Continuous-Wave Optical Parametric Amplifier
Authors: Kawasaki Akito , Takase Kan , Jeong Byung Kyu , Kashiwazaki Takahiro , Kazama Takushi , Enbutsu Koji , Watanabe Kei , Umeki Takeshi , Miki Shigehito , Terai Hirotaka , Yabuno Masahiro , China Fumihiro , Asavanant Warit , Endo Mamoru , Yoshikawa Jun-ichi , Furusawa Akira
Published: August 2022

We observed Wigner negativity of Schrödinger cat states generated with a low-loss continuous-wave optical parametric amplifier, paving the way toward fault-tolerant and universal quantum computation with terahertz clock frequency.
Non-Gaussian state design with the quantum frequency processor
Authors: Pizzimenti Andrew J. , Lukens Joseph M. , Lu Hsuan-Hao , Peters Nicholas A. , Guha Saikat , Gagatsos Christos
Published: August 2022

We develop an approach for engineering non-Gaussian photonic states in discrete frequency bins. Combining the quantum frequency processor and photon-number-resolving detection, simulated examples demonstrate the potential for producing high-fidelity cat states with reasonable resource requirements.
Creation of Photonic Cat and GKP States Using Modulated Electrons
Authors: Baranes Gefen , Dahan Raphael , Gorlach Alexey , Ruimy Ron , Rivera Nicholas , Kaminer Ido
Published: August 2022

We show how the coherent shaping of free-electron wavefunctions enables the construction of coherent grid states. We present a scheme to create Schrödinger cat and GKP states, which are sought-after for fault-tolerant photonic quantum computation.
Nontrivial corner states in breathing Kagome lattices with bearded edge truncation
Authors: Song Limin , Bongiovanni Domenico , Hu Zhichan , Xia Shiqi , Wang Ziteng , Tang Liqin , Song Daohong , Morandotti Roberto , Chen Zhigang
Published: August 2022

We report two types of distinct corner states in breathing Kagome lattices with bearded edge truncation. One type exists only in the topologically nontrivial regime, while the other preserves in both trivial and nontrivial regimes.
Generation of frequency entangled two-photon states in Sagnac interferometer
Authors: Li Jia-Rui , Yuan Chen-Zhi , Shen Si , Zhang Zi-Chang , Wang He-Qing , Li Hao , You Li-Xing , Wang Zhen , Wang You , Deng Guang-Wei , Song Hai-Zhi , Guo Guang-Can , Zhou Qiang
Published: August 2022

By pumping a periodically poled lithium niobite waveguide in a Sagnac interferometer, we obtain three types of frequency entangled two-photon states with further spectral manipulation.
High brightness single photon source at the telecom wavelength based on inhibited-coupling hollow-core fiber
Authors: Chambinaud A. , Cordier M. , Reigue A. , Asselah Y. , Bonamis G. , Hoenninger C. , Debord B. , Gérôme F. , Benabid F.
Published: August 2022

We report on a Raman-free heralded single-photon source based on xenon-filled hollowcore fiber pumped with GHz-repetition rate femtosecond laser. The measured brightness of 720 kHz is one order of magnitude improvement over our previous demonstration.
A Quantum Microcomb with 2.1 dB Raw Squeezing
Authors: Yang Zijiao , Jahanbozorgi Mandana , Jeong Dongin , Sun Shuman , Pfister Olivier , Lee Hansuek , Yi Xu
Published: August 2022

We demonstrate a squeezed optical microresonator-based frequency comb (microcomb) in a silica microresonator on a silicon chip. 22 two-mode squeezed qumodepairs (44 qumodes) and a maximum raw squeezing of 2.1 dB are measured.
Achieving flat spectral envelopes of soliton crystal frequency microcombs
Authors: Hu Futai , Vinod Abhinav Kumar , Wang Wenting , Zhan Ziyu , Gong Mali , Wong Chee Wei
Published: August 2022

Flat optical spectra are desired in many frequency microcomb applications such as ultrabroadband optical communication, interconnects, spectroscopy, and metrology. Here we achieve flat-top spectral envelopes via deterministic control in soliton crystal microcombs.
Vibrational Kerr solitons in an optomechanical microresonator
Authors: Shi Jia-Chen , Ji Qing-Xin , Cao Qi-Tao , Yu Yan , Liu Wenjing , Gong Qihuang , Xiao Yun-Feng
Published: August 2022

We theoretically demonstrated the existence of Kerr soliton microcombs in an optomechanical microresonator. Interestingly, an exotic vibrational Kerr soliton state is found, which is modulated by a self-sustained mechanical oscillation with a red-detuned pump.
Boundary-induced trapped state in electro-optic frequency combs
Authors: Hu Yaowen , Yu Mengjie , Sinclair Neil , Zhu Di , Cheng Rebecca , Wang Cheng , Loncar Marko
Published: August 2022

We show that, when optical energy propagates in the frequency dimension during the generation of electro-optic microcombs, the introduction of a frequency boundary can reflect the energy propagation. Further, we show that two boundaries yield a trapped state in frequency dimension.
Polarization multiplexed dissipative Kerr solitons in an on-chip micro-resonator
Authors: Geng Yong , Xiao Yanlan , Han Xinjie , Xu Jing , Qiu Kun , Zhou Qiang , Zhou Heng
Published: August 2022

We demonstrate polarization multiplexed dissipative cavity solitons in an on-chip silicon nitride micro-resonator, and analyze the evidences and reasons of the weak mutual interaction between orthogonally polarized soliton microcombs.
Dual-comb generation in coupled nonlinear microcavities by tuning the coupling
Authors: Cheng Zihao , Huang Dongmei , Li Feng , Lu Chao , Wai P. K. A.
Published: August 2022

Microcavity based optical frequency combs are commonly generated with a tunable continuous wave laser pump making it unsuitable for chip-level integration. We proposed a new dual-comb generation scheme in coupled nonlinear microcavities with a single frequency pump.
Topological Polarized Laser Solitons
Authors: Fedorov S. V. , Rosanov N. N. , Veretenov N. A.
Published: August 2022

We present results of analytical and numerical analysis of spatial solitons with polarization singularities in wide-aperture surface-emitting semiconductor lasers with saturable absorption. Singularities includes C-points with circular polarization and L-lines with linear polarization.
Origin of High Transmission in 120-degree Sharp Bends of Photonic-crystal Waveguides with and without Inversion Symmetry
Authors: Dai Wei , Yoda Taiki , Moritake Yuto , Ono Masaaki , Kuramochi Eiichi , Notomi Masaya
Published: August 2022

Various reports demonstrated that valley photonic-crystal waveguides without inversion symmetry support high transmission in 120-degree sharp bends, whose origin, however, has not been clarified yet. Here, we find that the type of waveguide interfaces dominates this phenomenon instead of the existence of the broken inversion symmetry.
Nonlinear Circular Dichroism with Resonant Metasurfaces
Authors: Koshelev Kirill , Tang Yutao , Hu Zixian , Kravchenko Ivan , Li Guixin , Kivshar Yuri
Published: August 2022

We predict and demonstrate experimentally large third-harmonic circular dichroism in transmission for chiral dielectric metasurfaces with broken in-plane symmetry. We explain the observed large nonlinear circular dichroism by excitation of resonant multipolar Mie modes.
High Harmonic Generation Driven by Quantum Light: Strong-Field Approximation & Attosecond Pulses
Authors: Tsur Matan Even , Birk Michael , Gorlach Alexey , Krüger Michael , Kaminer Ido , Cohen Oren
Published: August 2022

We develop a quantum-optical theory of high harmonic generation under the strong-field approximation, showing that continuum electronic trajectories and the corresponding attosecond pulses (envelope, duration & phase) strongly depend on the driving field’s photon statistics.
High harmonic lasing using attosecond electron pulses combs in photon-induced near-field electron microscopy
Authors: Pan Yiming , Kaminer Ido , Krueger Michael
Published: August 2022

We propose a new high harmonic lasing mechanism using attosecond electron pulses, which can serve as promising ultra-bright extreme ultraviolet/soft X-ray attosecond laser sources.
Superachromatic Reflective Phase Retarder for the Polarization Conversion of Attosecond Pulses
Authors: Sakata Keisuke , Ito Kengo , Sekikawa Taro
Published: August 2022

A reflective superachromatic phase retarder for extreme ultraviolet attosecond pulses was developed using SiC mirrors. The phase retardation at 28.0 eV is 90° with a deviation less than ±λ/50 for a bandwidth of 3.1 eV.
Visible-wavelength optomechanical crystal for coupling phonons to a silicon vacancy center in diamond
Authors: Haas Michael , Kuruma Kazuhiro , Joe Graham , Chia Cleaven , Assumpcao Daniel , Machielse Bartholomeus , Sinclair Neil , Lončar Marko
Published: August 2022

We demonstrate the first realization of a visible-wavelength optomechanical crystal cavity in diamond. This device is fabricated using quasi-isotropic etching and optical (mechanical) quality factors of 3.1 × 104 (1.1 × 103) at room temperature.
Realizing a Quantum-enabled Interconnect Between Microwave and Telecom Light
Authors: Sahu R. , Hease W. , Rueda A. , Arnold G. , Qiu L. , Fink J. M.
Published: August 2022

We present a quantum-enabled microwave-telecom interface with bidirectional conversion efficiencies up to 15% and added input noise quanta as low as 0.16. Moreover, we observe evidence for electro-optic laser cooling and vacuum amplification.
On-chip Microwave-to-Optical Transducer Based on Rare-Earth Ions
Authors: Xie Tian , Rochman Jake , Bartholomew John G. , Schwab Keith , Faraon Andrei
Published: August 2022

Microwave-to-optical transduction is essential for connecting superconducting platforms with optical quantum networks. We demonstrate coherent transduction in both continuous-wave and pulsed mode using rare-earth ions with an integrated superconducting microwave resonator and nanophotonic optical resonator.
Multidimensional Cluster States Using a Single Spin-photon Interface Coupled Strongly to an Intrinsic Nuclear Register
Authors: Michaels Cathryn P. , Martínez Jesús Arjona , Debroux Romain , Parker Ryan A. , Stramma Alexander M. , Huber Luca I. , Purser Carola M. , Atatüre Mete , Gangloff Dorian A.
Published: August 2022

We propose the generation of multi-dimensional cluster states using a single, efficient spin-photon interface coupled strongly to a nuclear register. We show numerically that for SiV- in diamond a 2×5- sized cluster state is achievable.
Theory of Ground State Cooling of a Macroscopic Anelastic Mechanical Oscillator
Authors: Komori Kentaro , Ďurovčíková Dominika , Sudhir Vivishek
Published: August 2022

Conventional laser cooling techniques have proved inefficient on mechani-cal oscillators heavier than a few nanograms. Here, we present a new approach to realize motional ground state cooling of such oscillators, paving the way to currently inaccessible experiments such as tests of gravity’s effect on massive quantum systems.
Kerr-Microcombs with Detectable Low-Noise Microwave-Repetition Rate in Chip-Integrated Fabry–Pérot Resonators
Authors: Wildi Thibault , Gaafar Mahmoud , Voumard Thibault , Ludwig Markus , Herr Tobias
Published: August 2022

Low-noise Kerr-combs with detectable microwave repetition rate are generated for the first time in chip-integrated high-Q Fabry–Pérot m croresonators. Steps-features characteristic of dissipative Kerr solitons formation are observed in the transmitted power.
Ultraviolet to Near-infrared Frequency Comb Generation in Lithium Niobate Nanophotonic Waveguides with Chirped Poling
Authors: Wu Tsung-Han , Ledezma Luis , Fredrick Connor , Sekhar Pooja , Sekine Ryoto , Guo Qiushi , Briggs Ryan , Marandi Alireza , Diddams Scott A.
Published: August 2022

We demonstrate thin-film lithium niobate waveguides with chirped poling periods for efficient supercontinuum via χ(2) and χ(3) nonlinearities. With picojoule energies, we generate gap free frequency combs spanning 330 to 2400 nm.
Stability and mutual coherence measurement of a Raman microcomb in a silica WGM microresonator
Authors: Sugawara Shuto , Fujii Shun , Sota Shota , Tanabe Takasumi
Published: August 2022

We investigated the stability, longitudinal spacing, and mutual coherence of a generated Raman microcomb and found that we can obtain a highly stable and coherent Raman microcomb even without a four-wave mixing process.
Observation of walk-off Solitons in Step-index and Graded-index Multimode Fibers
Authors: Zitelli Mario , Sun Yifan , Ferraro Mario , Mangini Fabio , Sidelnikov Oleg , Couderc Vincent , Wabnitz Stefan
Published: August 2022

We observe a new type of walk-off soliton propagating in multimode step-index and in graded-index fibers. Pulse initial duration and energy only depend on the input wavelength, and it evolves into a fundamental mode soliton.
Power-efficient soliton microcombs in anomalous-dispersion photonic molecules
Authors: Helgason Óskar B. , Girardi Marcello , Ye Zhichao , Schröder Jochen , Victor Torres-Company
Published: August 2022

We demonstrate a microcomb with power conversion efficiency exceeding 50%. It originates from a single dissipative Kerr soliton circulating in an anomalous-dispersion microresonator whose pump resonance is shifted through linear coupling with an auxiliary cavity.
Phase Noise Reduction of a Kerr Comb via All-Optical Synchronization to an Optical Parametric Oscillator
Authors: Jang Jae K. , Zhao Yun , Okawachi Yoshitomo , Ji Xingchen , Lipson Michal , Gaeta Alexander L.
Published: August 2022

We demonstrate on a silicon-nitride chip all-optical synchronization between an optical parametric oscillator and a soliton Kerr comb, resulting in a near-complete suppression of excess phase noise associated with thermo-refractive noise in soliton comb lines.
Laser-Driven Photon Sources and Exemplary Applications at ELI Beamlines
Authors: Mai Dong Du , Pulnova Yelyzaveta , Espinoza Shirly , Klimešová Eva , Angelov Borislav , Hort Ondrej , Chaulagain Uddhab , Krikunova Maria , Molodozhentsev Alexander , Andreason Jakob , Nejdl Jaroslav , Bulanov Sergei
Published: August 2022

E(xtreme)L(ight)I(nfrastructure) Beamlines within the EU’s ELI project provides laser-driven secondary sources of EUV/XUV, X-ray and relativistic charged particles offering unique pump/probe/harvest experimental schemes carried out by various end stations.
Control of Pulse Front Tilt and Curvature for Ultrafast Ponderomotive Electron Acceleration
Authors: Wilhelm Alex M. , Durfee Charles G.
Published: August 2022

We explore an electron acceleration scheme which uses the ponderomotive force of a tilted ultrafast laser as the drive mechanism for acceleration. The effect of pulse front curvature on the acceleration process is also discussed.
Ultrafast renormalization of the onsite Coulomb repulsion in a cuprate superconductor
Authors: Baykusheva D. , Jang H. , Husain A. , Lee S. , TenHuisen S. , Zhou P. , Park S. , Kim H. , Kim J. , Kim H.-D. , Kim M. , Park S.-Y. , Abbamonte P. , Kim B. J. , Gu G. D. , Wang Y. , Mitrano M.
Published: August 2022

Time-resolved x-ray absorption spectroscopy is used to monitor the transient modification of the on-site Coulomb repulsion in the high-temperature superconductor La1.905Ba0.095CuO4 following an excitation with an ultrashort optical femtosecond pulse.
Focused X-ray Beams from Van der Waals Heterostructures
Authors: Shi Xihang , Kurman Yaniv , Shentcis Michael , Wong Liang Jie , de Abajo F. Javier García , Kaminer Ido
Published: August 2022

We present the concept of customized van der Waals heterostructures with periodicity tailored to generate pre-designed X-ray patterns from free electrons. As an example, we demonstrate focused X-ray beams.
Topological Photonic Crystal Fiber
Authors: Roberts Nathan , Baardink Guido , Nunn Josh , Mosley Peter J , Souslov Anton
Published: August 2022

Despite recent progress in topological photonics, a challenge remains to realise topological states in a scalable platform. Here we fabricate optical fiber characterized by a topological invariant and demonstrate protected supermode propagation over 106 wavelengths.
Experimental Demonstration of Boundaries along a Synthetic Frequency Dimension
Authors: Dutt Avik , Yuan Luqi , Yang Ki Youl , Wang Kai , Buddhiraju Siddharth , Vuckovic Jelena , Fan Shanhui
Published: August 2022

We theoretically outline and experimentally demonstrate the creation of boundaries along a synthetic frequency dimension, and use it to show the reflection-free nature of backscattering immune topological one-way edge states in a quantum Hall ladder.
Optical dispersion properties of topological photonic crystals using infrared photonic band diagram microscope
Authors: Okada Sho , Amemiya Tomohiro , Kagami Hibiki , Wang Yahui , Nishiyama Nobuhiko , Hu Xiao
Published: August 2022

We developed a photonic band diagram microscope using hyperspectral Fourier image spectroscopy to investigate optical properties of topological photonic crystals. The band inversion near the Γ point was observed in the high-speed measurement.
Higher-Order Photonic Topological States in Split-Ring Resonators-Based Kagome Lattice
Authors: Zhirihin D. , Bobylev D. , Tihonenko D. , Vakulenko A. , Smirnova D. , Khanikaev A. , Gorlach M.
Published: August 2022

We demonstrate experimentally the emergence of higher-order topological states induced by bianisotropy in a photonic metasurface formed by split-ring resonators (SRR) arranged into a kagome lattice.
Single photon emission from waveguide-integrated color centers in silicon
Authors: Prabhu Mihika , Errando-Herranz Carlos , De Santis Lorenzo , Christen Ian , Chen Changchen , Englund Dirk
Published: August 2022

We demonstrate silicon color centers coupled to foundry-compatible silicon waveguides. We produced G-centers via carbon implantation in commercial silicon-on-insulator waveguides and measure through-waveguide single-photon emission in the telecommunications O-band.
Correlative Cathodoluminescence Microscopy of Strain-Enhanced hBN Spin Defects
Authors: Lawrie Benjamin J. , Curie David , Solanki Abhishek , Li Tongcang , Upadhyaya Pramey , Cavar Lukas
Published: August 2022

We utilize correlative cathodoluminescence, photoluminescence, and scanning electron microscopies to map the strain enhancement of boron vacancy spin-defect emission across creases in hBN flakes with nanoscale spatial resolution.
Varifocal Meta-lens for Fluorescence Microscopy
Authors: Chen Mu Ku , Fan Yubin , Yao Jin , Liu Xiaoyuan , Zhang Jincheng , Sun Linshan , Chia Yu-Hsin , Kuo Hsin-Yu , Chu Cheng Hung , Vyas Sunil , Luo Yuan , Tsai Din Ping
Published: August 2022

We demonstrated a Moiré meta-lens to perform fluorescence bioimaging. The focal length can be varied by tuning mutual angles. The compact design plays an important role in fluorescence microscopy and endoscopy for clinical purposes.
Bloch oscillations of temporal cavity solitons in a synthetic frequency dimension
Authors: Englebert Nicolas , Goldman Nathan , Mostaan Nader , Erkintalo Miro , Gorza Simon-Pierre , Leo François , Fatome Julien
Published: August 2022

We report on the theoretical and experimental demonstration of nonlinear dissipative Bloch oscillations occurring in a long-range synthetic frequency dimension sustained by temporal cavity solitons persisting endlessly in a nonlinear fibre Kerr resonator.
Temporal Binding of a Coherent Spectrally Translated Pulse from a Dissipative Kerr Soliton in a Synthetic Frequency Lattice
Authors: Moille Grégory , Perez Edgar F. , Chembo Yanne K. , Menyuk Curtis , Srinivasan Kartik
Published: August 2022

We present a dissipative Kerr soliton in a synthetic frequency lattice mediated by four-wave mixing Bragg scattering. The dual pumping creates a potential that temporally binds a coherent spectrally translated pulse to the original soliton.
Casimir-Like Interaction of Bound Solitons
Authors: Sulimany Kfir , Tziperman Offek , Bromberg Yaron , Gat Omri
Published: August 2022

We the steady states of two-soliton waveforms that form stationary bound states in a fiber laser, passively mode-locked by a nonlinear-multimode-interference based saturable absorber. We model the steady states using noise-mediated Casimir-like pulse interaction mechanism.
Superluminal k-gap solitons in photonic time-crystals with Kerr nonlinearity
Authors: Pan Yiming , Cohen Moshe-Ishay , Segev Mordechai
Published: August 2022

We find superluminal solitons residing in the momentum gap of nonlinear photonic time-crystals and explore their faster-than-light pulse propagation in view of Einstein’s causality, the instantaneous response of time-varying permittivity, and signal velocity forerunners.
Quadratic Cavity Solitons for Enhanced Optical Gas Sensing
Authors: Gray Robert , Zhou Selina , Liu Mingchen , Marandi Alireza
Published: August 2022

We utilize the unique formation dynamics of quadratic cavity solitons for enhanced sensing, experimentally show CO2 sensing with high sensitivity and large dynamic range, and present the promising potentials of soliton-enhanced gas sensors.
Dissipative Kerr solitons ian chains of microresonators
Authors: Tusnin Aleksandr , Tikan Alexey , Kippenberg Tobias J.
Published: August 2022

We theoretically study Dissipative Kerr solitons (DKS) in chains of optical microresonators. We show regimes of formation of conventional solitons and 2D spatio-temporal pulses considering both topologically non-trivial and trivial systems.