bluuebunny/crossref_metadata_2025 huggingface dataset:
Two-Color Aberration Cancellation with Stimulated Parametric Down-Conversion
Authors: Xu Yang , Tang Sirui , Boyd Robert W.
Published: September 2023

Free-space optical communication is susceptible to aberration. We use the pattern-transfer property of the non-degenerate stimulated parametric down-conversion in the low-gain regime to demonstrate an efficient scheme to cancel aberration.
Intracavity spatiotemporal laser mode control using metasurfaces strongly coupled to an epsilon-near-zero material
Authors: Jia Wenhe , Gao Chenxin , Zhao Yongmin , Li Liu , Wen Shun , Wang Shuai , Bao Chengying , Jiang Chunping , Yang Changxi , Yang Yuanmu
Published: September 2023

We experimentally demonstrate simultaneous spatiotemporal laser mode control in a fiber laser cavity using single-layer plasmonic metasurfaces strongly coupled to an epsilon-near-zero material.
Two-color Terahertz Generation by Flying Focus Pulses
Authors: Simpson Tanner T. , Pigeon Jeremy , Miller Kyle , Weichman Kathleen , Ambat Manfred Virgil , Ramsey Dillon , Froula Dustin H. , Palastro John P.
Published: September 2023

A pair of focused harmonics can drive an ionization front and transient current which generates broadband terahertz radiation. We show that controlling the ionization front trajectory can tune the terahertz emission angle.
Upconversion Through Six and Four Wave Mildly Relativistic Mixing in Plasmas
Authors: Griffith Alec R.B. , Qu Kenan , Fisch Nathaniel J.
Published: September 2023

Six and four wave mixing in plasmas could significantly upconvert optical light, in principle exceeding efficiencies of current technologies. We present a numerical study of upconversion by these means in a high laser intensity regime.
Laser-plasma simulation using the analytic pulse technique
Authors: Weichman K. , Miller K. G. , Mori W.B. , Vieira J. , Vranic M. , Palastro J. P.
Published: September 2023

The analytic pulse technique is a new approach to incorporating laser pulses in laser-plasma simulations. In particle-in-cell simulations, this technique allows direct evaluation of the paraxial approximation, reduced-dimensionality simulation, and lower-cost modeling of novel pulses.
Nonlinear optical pulses in media with spectrally asymmetric gain
Authors: Turitsyn S. K. , Bednyakova A. E. , Podivilov E.
Published: September 2023

A generic novel model governing optical pulse propagation in a nonlinear dispersive amplifying medium with asymmetric (linear spectral slope) gain is introduced. We examine the properties of asymmetric optical pulses formed in such gain-skewed media.
Supercontinuum Generation by Saturated Second-Order Nonlinear Interactions: Scaling Laws and Design Principles
Authors: Jankowski Marc , Fejer Martin M.
Published: September 2023

Saturated second-harmonic generation and three-wave mixing can be used to generate octave-spanning supercontinua with record-low energy requirements in waveguides with second-order nonlinearities. In this talk, we use a heuristic model to derive scaling laws that illuminate design rules, limitations, and new opportunities for these processes.
Femtosecond Extreme Nonlinear Optics with Multimode Fibers
Authors: Mangini Fabio , Ferraro Mario , Zitelli Mario , Wabnitz Stefan
Published: September 2023

We overview the nonlinear spatiotemporal propagation dynamics of femtosecond laser pulses in multimode optical fibers. Whenever the pulse peak power approaches the fiber breakdown threshold, several exotic nonlinear effects are observed.
Metal-insulator-metal metasurfaces for SHG conversion in the infrared
Authors: Matthia Tomasz , Fix Baptiste , Dupuis Christophe , Bardou Nathalie , Bouchon Patrick
Published: September 2023

In this paper, we demonstrate experimentally record high SHG conversion efficiencies for broad-spectrum metal-insulator-metal metasurfaces in the infrared. The attained efficiencies reach the 10-6 W-1 range, which is 22 times more than the previous ones.
Ultrafast dynamics of exciton-polaritons in 2D semiconductor monolayers
Authors: Liu Bin , Michail Evripidis , He Guiying , Sfeir Matthew Y. , Forrest Stephen R.
Published: September 2023

We observe ultrafast dynamics of exciton-polaritons in 2D semiconductor monolayers with sub-wavelength dielectric photonic structures via non-resonant and resonant pumps, which results from distinct relaxation mechanisms.
Harmonic generation in wide bandgap oxide materials enhanced by quasi-bound states in the continuum
Authors: Zhu Wenqi , Wang Zi , Kaassamani Shatha , Song Junyeob , Koksal Okan , Agrawal Amit
Published: September 2023

We design and fabricate high aspect-ratio dielectric metasurfaces made of wide-bandgap, low-index oxide materials that support quasi-bound states in the continuum. These states could be exploited to achieve high harmonic generation in the deep-UV regime.
Dissipative Soliton Chirp in Femtosecond Mode-Locked Ultralong Ring Fiber Lasers
Authors: Cáceres-Pablo Inés , Rosado Alejandro , Ania-Castañón Juan Diego
Published: September 2023

Pulse chirp accumulation in ultralong ring fiber lasers is experimentally studied, confirming a direct correlation with extended cavity length and deviation from ideal soliton propagation, which can inform system design to enhance the laser operation.
Hybrid fiber-based single-pass cascaded Raman laser generation
Authors: Kim Hansol , Kang Hyungu , Jung Hongjae , Jeong Yoonchan
Published: September 2023

We present a hybrid-fiber-based single-pass cascaded Raman laser consisting of a dispersion-shifted fiber combined with other commercial fibers, which outperforms a conventional single-fiber-based Raman laser in terms of stably generating spectral components over 1550 nm.
Mid-Infrared Source Tunable up to 4.8 µm Based on Soliton Self-Frequency Shift in an InF3 Fiber
Authors: Olivier Michel , Gauthier Jean-Christophe , Paradis Pascal , Dumas Marie-Frédérique , Bernier Martin , Vallée Réal
Published: September 2023

A source of tunable femtosecond solitons up to 4.8 µm is presented. The pulses emitted by a 2.8 µm mode-locked fiber laser are amplified in an Er-doped zirconium fluoride fiber and undergo soliton self-frequency shift in a small-core indium fluoride fiber.
Ultrafast Praseodymium-Doped Fluoride Fiber Laser at 635 nm
Authors: Olivier Michel , Lord Marie-Pier , Bernier Martin , Vallée Réal
Published: September 2023

An ultrafast praseodymium-doped fluoride fiber laser at 635 nm is presented. The laser is pumped by a 444.5 nm diode and is modelocked via nonlinear polarization evolution. It emits 0.4-nJ and 1.6-ps chirped pulses compressed to 174 fs by a pair of gratings.
Floquet Engineering of 3-Dimensional Dirac Semimetals
Authors: Shimano Ryo , Hirai Yoshua , Yoshikawa Naotaka
Published: September 2023

We investigated the light-control of topological matter phases in 3-dimensional Dirac electron systems. Light-induced creation of chiral gauge field and also the realization of exotic Floquet-Weyl states are suggested from time-resolved terahertz Faraday rotation measurements.
Integrated Nonlinear Photonics with TiO2-Ta2O5 Mixtures
Authors: Carollo Alexa R. , Brodnik Grant M. , Liu Haixin , Carlson David R. , Newman Zachary L. , Carlson Cecile , Black Jennifer A. , Papp Scott B.
Published: September 2023

We explore four-wave-mixing processes in nanophotonic waveguides of titania-doped tantala, demonstrating microresonator quality factors up to 3.6 ± 0.7 × 106. Ion-beam sputtering enables a new direction towards controlling and optimizing integrated nonlinear optics, using amorphous material mixtures.
Experimental Study of Quasi-phase-matching Spectrum Imperfections in Thin-film Lithium Niobate Frequency Doublers
Authors: Zhao Jie , Li Xiaoting , Hu Ting-Chen , Sayem Ayed Al , Li Haochuan , Kim Kwangwoong , Tate Al , Kopf Rose , Sanjari Pouria , Earnshaw Mark , Fontaine Nicolas K. , Wang Cheng , Blanco-Redondo Andrea
Published: September 2023

We unveil the primary origin of imperfections in quasi-phase-matching (QPM) spectrum from thin-film lithium niobate (TFLN) frequency doublers using scattered light imaging. We conclude the measured spectral distortion arises from non-uniformities in the film thickness.
High-Gain Regenerative Parametric Amplification On-Chip
Authors: Zhao Yun , Jang Jae K. , Ji Xingchen , Okawachi Yoshitomo , Lipson Michal , Gaeta Alexander L.
Published: September 2023

We demonstrate a chip-based regenerative parametric amplifier with 30-dB continuous-wave gain and < 10-mW of pump power, which allows for on-chip material-independent gain using low-cost pump lasers.
Kerr Soliton Dynamics in Normal-dispersion Photonic Crystal Ring Resonators
Authors: Zang Jizhao , Briles Travis C. , Jin Yan , Carlson David R. , Papp Scott B.
Published: September 2023

We investigate the pump distribution and soliton formation in normal-dispersion photonic-crystal ring resonators. Using a conventional telecom distributed feed-back laser as the pump, we experimentally generate Kerr solitons through direct laser-current tuning.
Circulator-free photonic integrated Brillouin laser
Authors: Liu Kaikai , Wang Jiawei , Chauhan Nitesh , Blumenthal Daniel J.
Published: September 2023

We report a circulator-free photonic integrated Brillouin laser is demonstrated for the first time with 11.0 mW optical threshold, 27% conversion efficiency and 1.3 Hz fundamental linewidth at 42.0 mW pump power.
High-power 1 µm laser based on monolithic box resonator
Authors: Cheng Shanshan , Zhang Xiaofan , Jia Kunpeng , Xie Zhenda , Zhu Shi-ning
Published: September 2023

We demonstrated the doubly-resonant optical parametric oscillators based on the monolithic box resonator and realized 1 µm laser with linewidth of 1 kHz, high output power exceeding 200 mW, and tuning range of 146.77 nm.
Tuning Ultra-Broadband Microresonator Parametric Oscillators Toward Atomic Transitions
Authors: Brodnik Grant M. , Liu Haixin , Carollo Alexa R. , Carlson David R. , Papp Scott B. , Black Jennifer A.
Published: September 2023

We explore microresonator parametric oscillators as optical sources for quantum sensors, highlighting a comprehensive laser-engine for strontium optical clocks. We demonstrate record wavelength span, precision frequency tuning, low additive frequency noise, and low threshold power.
Nonlinear Thermoelectric Transport in a Near-Field Plasmonic Environment: A Study on Thin-Film Black Phosphorous harnessing the Seebeck and Moiré Effects
Authors: Bello Frank D. , Clarke Daniel D. A. , Tarasenko Illya , Donegan John F. , Hess Ortwin
Published: September 2023

We investigate the Moiré and Seebeck-Peltier effects in thin-film black phosphorous under excitation from a near-field plasmonic resonator. We demonstrate the ability to directionally steer electrical current and adeptly manipulate temperature on the nanoscale.
Symmetry Breaking and Second-Harmonic Generation in Plasmonic Nanoparticle Arrays
Authors: Han Aoxue , Dineen Colm , Islam Md Sakibul , Moloney Jerome V. , Babicheva Viktoriia E.
Published: September 2023

We study second-harmonic generation in plasmonic nanoantennas with multi-pole Mie lattice resonances, exploring excitation conditions and periods. The symmetry is broken because of the coupling between the magnetic dipole and electric quadrupole in the lattice.
Nonreciprocal interactions of optical solitons under a stroboscopic nonlinearity
Authors: Zhuang Yuhui , Wu Juan , Li Siyu , Zhan Chenyang , Kang Qianqian , Hu Yi , Chen Zhigang , Xu Jingjun
Published: September 2023

We report non-reciprocal interactions of optical solitons under a stroboscopic nonlinearity. An oscillatory propagation of two mutually-interacting solitons is found, exhibiting non-conserved momenta of optical fields in a homogeneous medium.
Efficient Parametric Downconversion by Gain-trapped OPA in Thin-film Lithium Niobate
Authors: Hamrouni Marin , Jankowski Marc , Hwang Alex , Jornod Nayara , Mishra Jatadhari , Stokowski Hubert , McKenna Timothy P. , Langrock Carsten , Südmeyer Thomas , Safavi-Naeini Amir H. , Fejer M. M.
Published: September 2023

We demonstrate efficient optical parametric amplification in thin-film-lithium-niobate nanowaveguides dispersion-engineered to temporally trap the generated signal and idler. We observe parametric gains
>30 dB/pJ, enabling down-conversion of sub-10-pJ pump pulses to coherent 1.35-pJ idler pulses with a 140-nm-wide spectrum centered around 3200 nm.
Frequency-tunable all-optical broadband measurement of quadrature squeezing by controlling the phase-matching condition of an optical parametric amplifier
Authors: Kashiwazaki Takahiro , Inoue Asuka , Yamashima Taichi , Endo Mamoru , Umeki Takeshi , Furusawa Akira
Published: September 2023

We propose frequency-tunable measurement of quadrature squeezing from DC to 10-THz sideband frequencies using a gain-spectrum-shaped optical parametric amplifier. 4.3-dB squeezing at a 10-THz sideband frequency is successfully demonstrated by using periodically poled LiNbO3 waveguides.
Quantum Noise Dynamics in Saturated Nonlinear Pulse Interactions
Authors: Ng Edwin , Yanagimoto Ryotatsu , Jankowski Marc , Fejer M.M. , Mabuchi Hideo
Published: September 2023

We present a split-step framework for simulating nonlinear propagation of mul-timode quantum noise and entanglement in ultrafast pulses, beyond conventional linearized-noise approximations. We apply our method to model state-of-the-art dispersion-engineered devices on thin-film lithium niobate.
The Role of Ionization Injection in Direct Laser Acceleration
Authors: Cohen Itamar , Meir Talia , Tangtartharakul Kavin , Perelmutter Lior , Elkind Michal , Gershuni Yonatan , Levanon Assaf , Arefiev Alexey V , Pomerantz Ishay
Published: September 2023

For the past two decades, intense lasers have supported new schemes for generating high-energy particle beams in university-scale laboratories. With the direct laser acceleration (DLA) method, the leading part of the laser pulse ionizes the target material and forms a positively charged ion plasma channel into which electrons are injected and accelerated. DLA has been realized over a wide range of laser parameters, using low-atomic-number target materials. In this presented work we reveal that at these higher laser intensities, the leading edge of the laser pulse depletes the target material of its ionization electrons prematurely. We demonstrate experimentally and numerically that for efficient DLA to prevail, a target material of sufficiently high atomic number is required to maintain the injection of ionization electrons at the peak intensity of the pulse when the DLA chan-nel is already formed.
Femtosecond breathing of plasma wakes in a modulated density downramp
Authors: Zhang Chaojie , Mori Warren B. , Joshi Chan
Published: September 2023

Ultrashort but intense laser or relativistic beam drivers can excite non-evolving wakes in uniform-density plasmas. By introducing a periodically modulated density downramp, we show the plasma wakes can be forced to “breathe” on femtosecond timescales.
Signatures of Non-linear Compton Scattering in Scattered Angular Spectra
Authors: Russell Brandon K. , Bulanov Stepan S. , Qian Qian , Bulanov Sergei V. , Grittani Gabriele M. , Seipt Daniel , Arran Christopher , Ridgers Christopher P. , Blackburn Thomas , Thomas Alexander G. R.
Published: September 2023

Simulated electron and photon angular spectra produced by non-linear Comp-ton scattering using different models (LCFA, LMA, classical) are characterized. Signatures to differentiate between models are found and assessed for their ability to be measured experimentally.
Stimulated Brillouin Scattering in gases: from weak to strong damping limits and from weak to strong coupling regimes
Authors: Afeyan Bedros , Galloway Conner
Published: September 2023

A new kinetic theory description of Stimulated Brillouin Scattering (SBS) in a neutral gas uncovers three different regimes of operation. Implications for nonlinear optical amplifiers and pulse compressors for Inertial Fusion Energy lasers are given
Quantum electronics enabled by high-field physics
Authors: Nambu Noa , Nie Zan , Marsh Ken , Matteo Dan , Tochitsky Sergei , Morales Felipe , Ivanov Misha , Carlstroem Stefanos , Patchkovskii Serguei , Smirnova Olga , Joshi Chan
Published: September 2023

Observation of lasing signals at multiple wavelengths in argon atoms pumped by a 3-photon resonance with an intense 260 nm laser were used to observe the dynamics of electronic excited states.
All-Optical Kerr Synchronization of a Dissipative Kerr Soliton Microcomb to an Optical Reference
Authors: Moille Grégory , Stone Jordan , Chojnacky Michal , Menyuk Curtis , Srinivasan Kartik
Published: September 2023

We demonstrate Kerr-mediated all-optical synchronization of a dissipative Kerr solition with an external master laser in a single microring resonator. It enables passive frequency division for optical clock metrology applications.
Topological bound states in the continuum without global symmetry
Authors: Wang Xiangdong , Bongiovanni Domenico , Wang Ziteng , Abdrabou A. , Hu Zhichan , Jukić Dario , Song Daohong , Morandotti Roberto , El-Ganainy R. , Buljan Hrvoje , Chen Zhigang
Published: September 2023

We propose and demonstrate a scheme to convert a topological state into a bound state in the continuum that still enjoys topological protection, applicable to any sub-symmetry-protected topological system embedded in a continuum bath.
A topological optical parametric amplifier on a CMOS-chip
Authors: Sohn Byoung-Uk , Huang Yue-Xin , Choi Ju Won , Chen George F. R. , Ng Doris K. T. , Yang Shengyuan A. , Tan Dawn T. H.
Published: September 2023

We demonstrate 12.8dB optical parametric gain using a topological photonic waveguide based on the Su-Schrieffer-Heeger model with a domain wall, implemented on ultra-silicon-rich nitride. The Kerr nonlinearity is observed to induce delocalization in the topological mode.
Observation of Nonlinear Light Evolution in a Photonic Topological Pump
Authors: Kirsch Marco S. , Kartashov Yaroslav V. , Konotop Vladimir , Szameit Alexander , Heinrich Matthias
Published: September 2023

We experimentally demonstrate that a focusing Kerr nonlinearity can be har-nessed to selectively shift light injected into the topologically trivial band of a photonic Thouless pump into the regime of topological transport.
Guiding light at Lagrange points
Authors: Wei Yunxuan , Luo Haokun , Wu Fan O. , Pyrialakos Georgios G , Christodoulides Demetrios N. , Khajavikhan Mercedeh
Published: September 2023

We demonstrate for the first time a novel approach for guiding light by utilizing the unique characteristics of Lagrange points. Our methodology allows for trapping light in defocusing bulk environments – an aspect never realized before.
Microresonator Systems for Efficient Optical-Parametric Oscillation Spanning the Near-Infrared
Authors: Liu Haixin , Brodnik Grant M. , Carlson David R. , Black Jennifer A. , Papp Scott B.
Published: September 2023

We explore the nonlinear dynamics of microresonator OPO systems based on nanophotonic design and fabrication. Nonlinear wavelength converters provide high efficiency, low threshold, and broadband frequency generation from ~1–2 µm.
Observation of interband Kelly sidebands in coupled-ring soliton microcombs
Authors: Gao Maodong , Yuan Zhiquan , Yu Yan , Jin Warren , Ji Qing-Xin , Ge Jinhao , Feshali Avi , Paniccia Mario , Bowers John , Vahala Kerry
Published: September 2023

Kelly sidebands are excited between optical frequency bands in vernier-coupled high-Q microresonators. Continuous wave and electro-optic pump pulses are used to excite the sidebands. The spectral location of the sidebands agrees with dispersion measurements.
Integrated Optical Frequency Division for Low Noise mmWave Generation
Authors: Sun Shuman , Wang Beichen , Liu Kaikai , Wang Jiawei , Liu Ruxuan , Jahanbozorgi Mandana , Yang Zijiao , Morton Paul , Nelson Karl , Blumenthal Daniel , Yi Xu
Published: September 2023

We report a demonstration of integrated optical frequency division by using SiN-based reference coil cavity and soliton microcombs. Phase noise reduction of 36 dB is measured for frequency division from 6 THz to 100 GHz.
Efficient Second Harmonic Resonant Nonlinear Device in Thin-Film Lithium Niobate
Authors: Dean Devin J. , Park Taewon , Stokowski Hubert S. , Hwang Alexander Y. , Qi Luke , Fejer Martin M. , Safavi-Naeini Amir H.
Published: September 2023

We show that choice of quality factors of the interacting waves in resonant second harmonic generation allows for efficient power conversion at low powers. We demon-strate this with an experiment in thin-film lithium niobate.
Chip-Based All-Optical Frequency Division
Authors: Zhao Yun , Jang Jae K. , McNulty Karl J. , Ji Xingchen , Okawachi Yoshitomo , Lipson Michal , Gaeta Alexander L.
Published: September 2023

We demonstrate all-optical frequency division on a chip using a single pump laser which we use to generate ultra-low-noise high-frequency microwave signals.
Bandgap-detuned dark solitons in photonic-crystal resonators
Authors: Jin Yan , Briles Travis C. , Zang Jizhao , Carlson David R. , Papp Scott B.
Published: September 2023

We explore dark-soliton formation by bandgap-detuned excitation of photonic-crystal resonators. By designing resonator-mode bandgaps to compensate Kerr shifts of a dark soliton state, we achieve control over propagation direction and enhance the conversion efficiency.
Microcavity Platform for Widely Tunable Optical Double Resonance
Authors: Flågan Sigurd , Maletinsky Patrick , Warburton Richard J. , Riedel Daniel
Published: September 2023

We present in situ tuning of both the absolute and relative frequency of an optical microcavity by incorporating a wedged diamond membrane. Our platform enables continuous tuning of doubly-resonant Raman scattering over a THz range.
Multi-Octave Frequency Comb from a Nanophotonic Parametric Oscillator
Authors: Sekine Ryoto , Gray Robert , Ledezma Luis , Zhou Selina , Guo Qiushi , Marandi Alireza
Published: September 2023

We demonstrate a nanophotonic sync-pumped OPO with 4-ns-roundtrip cavity and 17.9 fJ threshold. At 109 fJ pumping, it generates two octaves of continuous and coherent spectrum. At higher pump energies, single-pass gain supersedes OPO coherence.
Highly Efficient Mid-IR Driven THz Generation, and Applications for Nonlinear Perturbation of Matter
Authors: Gollner Claudia , Jutas Rokas , Kreil Dominik , Dirin Dmitry N. , Boehme Simon C. , Baltuška Andrius , Kovalenko Maksym V. , Koulouklidis Anastasios D. , Fedorov Vladimir Yu. , Shumakova Valentina , Tzortzakis Stelios , Shalaby Mostafa , Pugžlys Audrius
Published: September 2023

We report on record optical-to-THz conversion efficiencies in two-color plasma filaments and organic crystals, driven by mid-IR pulses. Generated strong THz fields permit nonlinear manipulation of optical properties in bulk semiconductors and colloidal quantum dots.
Parametric nonlinear optics in sputtered metal oxide waveguides
Authors: MacFarlane Neil , Schreyer-Miller Aaron , Irvine David A. , Foster Mark A. , Houck William D. , Foster Amy C.
Published: September 2023

Parametric nonlinear optical interactions including four-wave mixing-based optical parametric oscillation are demonstrated in sputtered metal oxide waveguides and resonators including Ta2O5 and NbTaOx.
Optical rectification and electro-optic sampling using pnictide and chalcogenide ternary crystals
Authors: Carnio B. N. , Zawilski K. T. , Schunemann P. G. , Moutanabbir O. , Elezzabi A. Y.
Published: September 2023

Experimental measurements are conducted to investigate optical rectification generation and electro-optic detection in pnictide and chalcogenide ternary crystals at frequencies below ~3 THz.
Microcavity Brillouin Laser with C-band Tunable Phase Matching Condition
Authors: Liu Peng , Ji Qing-Xin , Jin Warren , Guo Joel , Wu Lue , Feshali Avi , Paniccia Mario , Bowers John , Vahala Kerry
Published: September 2023

A Brillouin laser with electrically-tunable phase matching is demonstrated using high-Q SiN microresonators. The device lases anywhere on demand in the optical C-band. Electrical tuning also enables controlled access to specific phonon modes.
Laser-Induced Refractive Index Change in Ophthalmic Hydrogels: Scaling to High-Speed Writing in the Single Shot Limit
Authors: Manning Zachary A. , Donaldson William R. , Knox Wayne H.
Published: September 2023

We demonstrate for the first time that high quality refractive index changes can be written in common ophthalmic materials using 36 fs pulses at 1kHz in the single-shot high intensity regime without material damage.
Octave-spanning spectrum with 200 mW per comb tooth
Authors: Winters Michael , McKinstrie Colin J. , Li Daniel , Foursa Dmitri , Wielandy Stephan , McDaniel Sean A. , Hudson Darren D.
Published: September 2023

We demonstrate record power per comb tooth in an octave-spanning near-IR spectrum. Using dual-pump cascaded four-wave mixing in a custom photonic-crystal fiber we generate 75 comb lines (2.8 THz spacing) with an average of ∼200 mW per line.
Cascade Stimulated Brillouin Scattering at Mid-infrared Wavelength using a Chalcogenide Glass On-chip Resonator
Authors: Ko Kiyoung , Suk Daewon , Kim Dohyeong , Park Soobong , Wang Rongping , Chun Byung Jae , Ko Kwang-Hoon , Choi Duk-Yong , Lee Hansuek
Published: September 2023

We report the first observation of on-chip Brillouin lasing at a 3.3 μm mid-infrared wavelength. A chalcogenide glass ultra-high-Q microresonator with Qint = 2.19 × 107. was used. Cascade Brillouin scattering stretching to the 6th Stokes wave was observed.
Second-order nonlinear optics using silicon
Authors: Heydari David , Cătuneanu Mircea , Ng Edwin , Mishra Jatadhari , Hamerly Ryan , Gray Dodd J. , Jankowski Marc , Fejer Martin M. , Mabuchi Hideo , Jamshidi Kambiz
Published: September 2023

We demonstrate both second harmonic generation (with a normalized efficiency of 0.20 %W
−
1 cm
−
2) and, to our knowledge, the first degenerate χ(2) optical para-metric amplifier (with an estimated normalized gain of 0.6 dBW
−
1
/
2 cm
−
1) using silicon-on-insulator waveguides fabricated in a CMOS-compatible commercial foundry.
Fabrication and characterization of polymer optical waveguide Bragg grating for pulse signal sensing
Authors: Li Hongqiang , Meng Wentao , Cao Lu , Zhang Lizhen , Liu Yang , Lin Zhilin , Zhao Ruina , Song Zhenya , Ren Feng , Zhang Shanshan , Chen Liying , Bai Jinjun , Cao Mengwei , Wang Yingjie , Zhu Zhiyue , Gao Tianxue , Li Enbang , Prades Joan Daniel
Published: September 2023

Polymer materials have the advantages of a low Young’s modulus and low-cost preparation process. In this paper, a polymer-based optical waveguide pressure sensor based on a Bragg structure is proposed. The change in the Bragg wavelength in the output spectrum of the waveguide Bragg grating (WBG) is used to linearly characterize the change in pressure acting on the device. The polymer-based WBG was developed through a polymer film preparation process, and the experimental results show that the output signal of the device has a sensitivity of 1.275 nm/kPa with a measurement range of 0-12 kPa and an accuracy of 1 kPa. The experimental results indicate that the device already perfectly responds to a pulse signal. It has significant potential application value in medical diagnostics and health testing, such as blood pressure monitoring, sleep quality monitoring, and tactile sensing.
Vector solitonic pulses excitation in microresonators via free carrier effects
Authors: Liu Mulong , Dang Yaai , Huang Huimin , Lu Zhizhou , Mei Sen , Cai Yanan , Zhou Wenquan , Zhao Wei
Published: September 2023

We numerically investigate the excitation of vector solitonic pulse with orthogonally polarized components via free-carrier effects in microresonators with normal group velocity dispersion (GVD). The dynamics of single, dual and oscillated vector pulses are unveiled under turn-key excitation with a single frequency-fixed CW laser source. Parameter spaces associated with detuning, polarization angle, interval between the pumped orthogonal resonances and pump amplitude have been revealed. Different vector pulse states can also be observed exploiting the traditional pump scanning scheme. Simultaneous and independent excitation regimes are identified due to varying interval of the orthogonal pump modes. The nonlinear coupling between two modes contributes to the distortion of the vector pulses’ profile. The free-carrier effects and the pump polarization angle provide additional degrees of freedom for efficiently controlling the properties of the vector solitonic microcombs. Moreover, the crucial thermal dynamics in microcavities is discussed and weak thermal effects are found to be favorable for delayed vector pulse formation. These findings reveal complex excitation mechanism of solitonic structures and could provide novel routes for microcomb generation.
Mask-based single-pixel tracking and imaging for moving objects
Authors: Zhang Yu , Wang Hongjie , Yin Yongkai , Jiang Wenjie , Sun Baoqing
Published: September 2023

Tracking and imaging for high-speed moving objects have a wide range of application prospects in many fields, such as transportation and security monitoring. In this paper, the chrome plated masks are designed to carry geometric moment and random binary encoding patterns, combined with single pixel detectors, to achieve real-time tracking and imaging of fast-moving object. By using the geometric moment principle to obtain the motion trajectory of the object, coding sub-patterns and corresponding detection signals are extracted at different positions to reconstruct the image of the object. Multiple optical paths are established to avoid the side effects of motion error, and a dedicated calibration approach is proposed to improve the accuracy of tracking. The feasibility of the method is demonstrated by simulations and experiments. The proposed scheme, which modulates light with static mask instead of spatial light modulator (SLM), improves the speed and spectral range meanwhile reduces the system cost.
360-degree directional micro prism array for tabletop flat-panel light field displays
Authors: Yu Xunbo , Dong Haoxiang , Gao Xin , Fu Bangshao , Pei Xiangyu , Zhao Siming , Yan Binbin , Sang Xinzhu
Published: September 2023

Tabletop light field displays are compelling display technologies that offer stereoscopic vision and can present annular viewpoint distributions to multiple viewers around the display device. When employing the lens array to realize the of integral imaging tabletop light field display, there is a critical trade-off between the increase of the angular resolution and the spatial resolution. Moreover, as the viewers are around the device, the central viewing range of the reconstructed 3D images are wasteful. In this paper, we explore what we believe to be a new method for realizing tabletop flat-panel light field displays to improve the efficiency of the pixel utilization and the angular resolution of the tabletop 3D display. A 360-degree directional micro prism array is newly designed to refract the collimated light rays to different viewing positions and form viewpoints, then a uniform 360-degree annular viewpoint distribution can be accurately formed. In the experiment, a micro prism array sample is fabricated to verify the performance of the proposed tabletop flat-panel light field display system. One hundred viewpoints are uniformly distributed in the 360-degree viewing area, providing a full-color, smooth parallax 3D scene.
Extending the capabilities of vectorial ptychography to circular-polarizing materials such as cholesteric liquid crystals
Authors: Ferrand Patrick , Mitov Michel
Published: September 2023

The problem of imaging materials with circular-polarization properties is discussed within the framework of vectorial ptychography. We demonstrate, both theoretically and numerically, that using linear polarizations to investigate such materials compromises the unicity of the solution provided by this computational method. To overcome this limitation, an improved measurement approach is proposed, which involves specific combinations of elliptical polarizations. The effectiveness of this strategy is demonstrated by numerical simulations and experimental measurements on cholesteric liquid crystal films, which possess unique polarization properties. With the help of Pauli matrices algebra, our results highlight the technique’s ability to discern between the different types of circular polarizers, uniform vs. non-uniform, and determine their handedness.
Measuring glass transition of a polymer coating layer over working fiber using forward Brillouin scattering
Authors: Bernstein Alon , Zehavi Elad , London Yosef , Hen Mirit , Stolov Andrei A. , Zadok Avi
Published: September 2023

The glass transition temperature is a key parameter of polymer coating layers that protect optical fibers, and it affects the proper function of the fibers in their service environment. Established protocols for glass transition temperature measurements are destructive, require samples of specific geometries, and may only be carried out offline. In this work, we report the nondestructive measurement of the glass transition temperature of an acrylate polymer coating layer over a working standard fiber. The method is based on forward stimulated Brillouin scattering. A large decrease in the modulus of the coating layer above the glass transition temperature manifests in the narrowing of the modal linewidths in the forward Brillouin scattering spectrum. The transition temperature agrees with the standard dynamic mechanical analysis of samples made of the same polymer. The protocol can be useful for coating materials research and development, production line quality assurance, and preventive maintenance.
Enhancement of stimulated Raman scattering of a weak vibration mode in tetrahydrofuran through the energy-transfer resonance of lycopene
Authors: Wang Suhan , Liu Xiaokai , Wang Haixin , Zhang Wei , Sun Chenglin , Fang Wenhui , Men Zhiwei
Published: September 2023

A method of energy-transfer resonance of lycopene used to enhance stimulated Raman scattering (SRS) of a weak vibration C–O mode in tetrahydrofuran (THF) was developed in this study. Only C–H SRS was observed in pure THF at high energies. When lycopene was added, the C–O SRS located at 915 cm−1 of the weak vibration mode in THF was observed. The maximum SRS enhancement of the C–O mode was achieved when the concentration was 3.72 × 10−6 mol/L because of the resonance enhancement of the solute, which transferred the excess vibrational energy to the solvent. Moreover, the pulse width compression phenomenon of the C–H vibration in the presence of C–O SRS was obtained.
Backward multiplex coherent anti-Stokes Raman (CARS) spectroscopic imaging with electron-multiplying CCD (EM-CCD) camera
Authors: Murakami Yusuke , Yoshimura Minami , Niels Klement W. J. , Oda Atsuki , Sakamoto Ryo , Yakabe Miho , Matsumoto Atsushi , Oketani Ryosuke , Leproux Philippe , Ikenouchi Junichi , Browne Wesley R. , Kano Hideaki
Published: September 2023

A multiplex CARS imaging system, equipped with an EM-CCD camera, was developed to improve the sensitivity of backward CARS imaging in biological analysis using an inverted microscope. The signal-to-noise ratio was improved by a factor of ca. 3 compared to a conventional CCD mode through the use of EM gain. When imaging epithelial cells in the backward CARS configuration, intracellular organelles such as lipid droplets and nuclei were spectroscopically identified with an exposure time of only 100 ms/pixel.
Experimental demonstration of phase-sensitive multimode continuous variable quantum key distribution with improved secure key rate
Authors: Su Zikang , Wang Jintao , Cai Dajian , Guo Xiaojie , Wang Dawei , Li Zhaohui
Published: September 2023

We develop and experimentally demonstrate a phase-sensitive continuous variable quantum key distribution system with improved secure key rate. This is achieved using multimode coherent states with phase-conjugated subcarrier modulation and phase-sensitive detection. The local oscillator for phase-sensitive detection is regenerated from a polarization-multiplexed carrier wave via optical injection locking. The proposed scheme has a higher classical information capacity at a given number of received photons and exhibits a higher secure key rate when applying the security analysis of the GG02 protocol. Experimental results confirm the higher secret key rate and better excess noise tolerance of the new scheme compared to the typical implementation of GG02.
Detection of per- and polyfluoroalkyl water contaminants with a multiplexed 4D microcavities sensor
Authors: Saetchnikov Anton V. , Tcherniavskaia Elina A. , Saetchnikov Vladimir A. , Ostendorf Andreas
Published: September 2023

The per- and polyfluoroalkyl substances (PFAS) are a group of organofluorine chemicals treated as the emerging pollutants that are currently of particularly acute concern. These compounds have been employed intensively as surfactants over multiple decades and are already to be found in surface and ground waters at amounts sufficient to have an effect on human health and ecosystems. Because of the carbon–fluorine bonds, the PFAS have an extreme environmental persistence and their negative impact accumulates with further production and penetration into the environment. In Germany alone, more than thousands of sites have been identified as contaminated with PFAS; thus, timely detection of PFAS residue is becoming a high priority. In this paper, we report on the high performance optical detection method based on whispering gallery mode (WGM) microcavities applied for the first time to detect PFAS contaminants in aqueous solutions. A self-sensing boosted 4D microcavity fabricated with two-photon polymerization is employed as an individual sensing unit. In an example of the multiplexed imaging sensor with multiple hundreds of simultaneously interrogated microcavities we demonstrate the possibility to detect the PFAS chemicals representatives at a level down to 1 ppb (parts per billion).
Cavity QED as a Platform for Simulating Dynamical Phases of Quenched Superconductors
Authors: Song Eric Yilun , Young Dylan J. , Chu Anjun , Barberena Diego , Wellnitz David , Niu Zhijing , Schäfer Vera M. , Rey Ana Maria , Thompson James K.
Published: September 2023

We experimentally demonstrate all three predicted dynamical phases of quenched superconductors using strontium atoms coupled to a high-finesse cavity. We show that this rich phenomenology can also be observed with a similar but different Hamiltonian.
Superconducting qubit readout via electro-optic transduction with low laser-induced backaction
Authors: Urmey Maxwell D. , Delaney Robert D. , Mittal Sarang , Brubaker Benjamin M. , Kindem Jonathan M. , Frattini Nicholas E. , Talamo Luca G. , Adachi Kazemi , Lin Sheng-Xiang , Dickson Sarah , Regal Cindy A. , Lehnert Konrad W.
Published: September 2023

We perform dispersive readout of a superconducting qubit using optical heterodyne detection via a mechanical electro-optic transducer, without causing significant backaction on the qubit. This is a key milestone in linking remote superconducting quantum processors.
Probing Earth’s rotation effect on two-photon entanglement
Authors: Silvestri Raffaele , Yu Haocun , Peterson Robert W. , Hilweg Christopher , Walther Philip
Published: September 2023

We present the first experimental measurement of the Earth’s rotation induced phase shift on a two-photon maximally entangled state by means of a large-scale fiber Sagnac interferometer of milliradian phase resolution.
Quantum entangled Sagnac interferometer
Authors: Zhao Wen , Tang Xuan , Guo Xueshi , Li Xiaoying , Ou Z. Y.
Published: September 2023

By inserting quantum entangled SU(1,1) interferometers into a Sagnac interferometers, we form a Sagnac-SU(1,1) interferometer for rotational sensing. We find the rotational signal comes from ``classical" and ``quantum" parts with the latter enhanced by quantum entanglement.
Direct observation of geometric phase in dynamics around a conical intersection with a trapped ion analog quantum simulator
Authors: Valahu Christophe H. , Olaya-Agudelo Vanessa C. , MacDonell Ryan J. , Navickas Tomas , Rao Arjun D. , Millican Maverick J. , Biercuk Michael J. , Tan Ting Rei , Kassal Ivan
Published: September 2023

We review our recent results in which we use trapped ions to observe geometric phase interference around a conical intersection [arXiv:2211.07320, 2022]. This is a key demonstration towards using mixed-qubit boson simulators to solve difficult chemical dynamics problems.
Towards High-Fidelity Gates and Quantum Memory with Spin Qubits in Isotopically Engineered Diamond
Authors: Schymik K. , Bartling H. , Yun J. , van Riggelen M. , van Ommen B. , Bradley C. E. , Yamamoto T. , Taminiau T.H.
Published: September 2023

We demonstrate high-fidelity one- and two-qubit gates and long-lived quantum memory using NV centers in isotopically engineered diamond. These results demonstrate key requirements for distributed quantum computing based on spins in diamond.
3-Qubit Gates in a Microwave-controlled Trapped Ion Quantum Computer Using an Always-On Interaction
Authors: Huber Patrick , Barthel Patrick , Bose Sougato , García-Ripoll Juan José , Haber Johann , Omar Yasser , Pratapsi Sagar , Torrontegui Erik , Wunderlich Christof
Published: September 2023

Direct implementation of N-qubit gates (N ≥ 3) circumvents decomposition of a quantum algorithm into 2-qubit operations, effectively reducing the required depth of quantum circuits. Using all-to-all coupling in a trapped ion quantum computer, we experimentally realize classical Toffoli and quantum perceptron gates.
Experimental Observation of BCS Dynamical Phases in a Strontium Cavity-QED System
Authors: Young Dylan J. , Chu Anjun , Song Eric Yilun , Barberena Diego , Wellnitz David , Niu Zhijing , Schäfer Vera M. , Rey Ana Maria , Thompson James K.
Published: September 2023

We simulate out-of-equilibrium dynamics in Bardeen-Cooper-Schrieffer model of superconductivity using ~106 Sr atoms coupled via cavity-mediated spin-exchange inter-actions. In doing so, we observe three theoretically-predicted dynamical phases and identify corresponding phase transitions.
Quantum key distribution with model-based polarization correction using entangled photons
Authors: Chandrashekara Uday , Kržič Andrej , Gómez Rodrigo , Töpfer Sebastian , Spiess Christopher , Sharma Sakshi , Steinlechner Fabian
Published: September 2023

We present a Polarization correction module and a model-based polarization correction technique that are assessed and implemented for establishing Quantum key distribution on terrestrial free-space quantum communication link using an Entangled photon source.
Progress on a Memory-Compatible MDI-QKD System over Standard Telecom Infrastructure: a First-Generation Quantum Internet Service
Authors: Castillo-Veneros Leonardo , Katramatos Dimitrios , Cottrill Dillion , Du Dounan , Martinez-Rincon Julian , Figueroa Eden
Published: September 2023

We present the design and function of a long-distance, polarization-encoded MDI-QKD system. Our system is designed for online key streaming and compatibility with quantum memories—a key step toward constructing quantum repeater networks.
The Science Operation Centre for the Quantum Encryption and Science Satellite Mission
Authors: Kuntz Katanya B. , Godin Paul J. , Higgins Brendon L. , Moffat Brian , Jennewein Thomas
Published: September 2023

We provide an overview of the upcoming Canadian Quantum Encryption and Science Satellite (QEYSSat) mission and its scientific implementation, specifically the Science Operation Centre, which will assess, validate and coordinate proposed scientific experiments.
Resource-efficient quantum key distribution with using integrated silicon photonics
Authors: Wei Kejin , Hu Xiao , Du Yongqiang , Hua Xin , Zhao Zhengeng , Chen Ye , Huang Chunfeng , Xiao Xi
Published: September 2023

We report a demonstration of resource-efficient chip-based BB84 QKD with a silicon-based encoder and decoder. The system enables realizing secure key distribution at a rate of 866 bps over a commercial fiber channel up to 150 km.
Quantum Key Distribution in Daylight with an Adjustable Spatial Filter
Authors: Kržič Andrej , Döll Nico , Chandrashekara Uday , Spiess Christopher , Sharma Sakshi , Goy Matthias , Steinlechner Fabian
Published: September 2023

Quantum key distribution (QKD) remains extremely challenging in daylight. We developed an adjustable spatial filter and demonstrated kbps-rate entanglement-based QKD over 1.7 km in direct sunlight. We investigated its potential to further optimize system performance.
Photon pair generation with >600 coincidence-to-accidental ratio in the 4H-SiC-on-insulator platform
Authors: Rahmouni Anouar , Ma Lijun , Wang Ruixuan , Li Jingwei , Tang Xiao , Gerrits Thomas , Li Qing , Slattery Oliver
Published: September 2023

We demonstrate efficient photon pair generation via implementing spontaneous four-wave mixing in a compact, high-quality-factor microring resonator in the 4H-silicon-carbide-on-insulator platform. Photon pairs with coincidence-to-accidental ratio up to 600 are measured.
An Integrated and Fiber-Coupled Interface with Tin-Vacancy Centres in Diamond Waveguides
Authors: Pasini M. , Codreanu N. , Moral A. Riera , De Santis L. , Beukers H. K. C. , Waas C. , Brevoord J. M. , Borregaard J. , Hanson R.
Published: September 2023

We integrate tin-vacancy colour centres in diamond nanophotonic waveguides with a fiber-based coupling interface. From spectroscopic investigation we find narrow in-homogeneous distribution, almost transform-limited optical transitions and low spectral diffusion.
Generation of four-photon GHZ states on a laser written integrated platform
Authors: Corrielli G. , Pont M. , Fyrillas A. , Agresti I. , Carvacho G. , Maring N. , Emeriau P. E. , Ceccarelli F. , Albiero R. , Ferreira P.-H. Dias , Somaschi N. , Senellart J. , Morassi M. , Lemaitre A. , Sagnes I. , Senellart P. , Sciarrino F. , Liscidini M. , Belabas N. , Osellame R.
Published: September 2023

We present a laser-written glass photonic circuit that, in synergy with a quantum dot based single photon source, generates a four-photon Greenberger-Horne-Zeilinger entangled state at the rate of 0.5 Hz with 86.0 ± 0.4% fidelity.
Bayesian quantum state reconstruction with a learning-based tuned prior
Authors: Regmi Sangita , Blackwell Ashley N. , Khannejad Amirali , Lohani Sanjaya , Lukens Joseph M. , Glasser Ryan T. , Kirby Brian T. , Searles Thomas A.
Published: September 2023

We demonstrate machine-learning-enhanced Bayesian quantum state tomography on near-term intermediate-scale quantum hardware. Our approach to selecting prior distributions leverages pre-trained neural networks incorporating measurement data and en-ables improved inference times over standard prior distributions.
Precise Hamiltonian tomography in quantum circuits
Authors: Ho Le Bin
Published: September 2023

We present a circuit-based approach for analyzing the measurement precision in Hamiltonian tomography via quantum quench.
Jaynes-Cummings interaction between slow free-electrons and cavity photons
Authors: Karnieli Aviv , Fan Shanhui
Published: September 2023

The Jaynes-Cummings model, quintessential to quantum technologies, relies on bound electron systems having limited controllability. Here we show that low-energy free-electrons interacting with cavity photons offer alternative and versatile ways to implement the Jaynes-Cummings interaction.
Constant-time Quantum Algorithm for Homology Detection of Closed Curves
Authors: Nghiem Nhat A. , Gu Xianfeng David , Wei Tzu-Chieh
Published: September 2023

Given an oracle that could query the inclusion of edges on a closed curve, we give a constant-time (single query usage) quantum algorithm that determines whether or not that curve is homologous to zero on a two-dimensional manifold.
Numerical analysis of quantum circuits for state preparation and unitary operator synthesis
Authors: Ashhab Sahel , Yamamoto Naoki , Yoshihara Fumiki , Semba Kouichi
Published: September 2023

We use numerical optimal-control-theory techniques to calculate the number of CNOT gates needed to perform quantum state preparation and unitary operator synthesis. Our approach pro-vides new results and previously inaccessible insight.