Article
Physics, Multidisciplinary
Jack Y. Qiu, Arne Grimsmo, Kaidong Peng, Bharath Kannan, Benjamin Lienhard, Youngkyu Sung, Philip Krantz, Vladimir Bolkhovsky, Greg Calusine, David Kim, Alex Melville, Bethany M. Niedzielski, Jonilyn Yoder, Mollie E. Schwartz, Terry P. Orlando, Irfan Siddiqi, Simon Gustavsson, Kevin P. O'Brien, William D. Oliver
Summary: Squeezing of the electromagnetic vacuum is a vital technique for reducing quantum noise in various applications. Researchers have developed a dual-pump, broadband Josephson travelling-wave parametric amplifier that achieves single-mode squeezing comparable to the best resonator-based squeezers. Additionally, they demonstrate two-mode squeezing at microwave frequencies with a significantly wider bandwidth than contemporary resonator-based squeezers. The amplifier has the potential to create entangled microwave photon pairs with large frequency separation, enabling high-fidelity qubit readout, quantum illumination, and teleportation.
Article
Optics
Yirui Wang, Jing Wang, Bingjie Zhou, Jingui Ma, Peng Yuan, Liejia Qian
Summary: OPCPA is susceptible to undesired spatiotemporal couplings caused by nonlinear phase shifts from frequency-dependent phase mismatch. These couplings result in pulse-front deformation, transversely varying pulse duration, and spectrally varying wavefront curvature, directly related to phase-mismatch dispersion terms. Numerical study shows that focused signal intensity significantly decreases with increasing signal bandwidth and pump depletion.
Article
Physics, Applied
J. Grebel, A. Bienfait, E. Dumur, H. -S. Chang, M. -H. Chou, C. R. Conner, G. A. Peairs, R. G. Povey, Y. P. Zhong, A. N. Cleland
Summary: A simple design for a Josephson parametric amplifier has been presented, with an emphasis on optimizing flux-coupling geometry and using an impedance-matching circuit to enhance bandwidth. It operates in a flux-pumped mode with over 20dB power gain over a bandwidth of about 300MHz, demonstrating quantum-limited performance based on approximate noise measurements.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Antoine Godard, Marie Guionie, Jean-Baptiste Dherbecourt, Jean-Michel Melkonian, Myriam Raybaut
Summary: In this study, we theoretically investigate the backward interaction optical parametric oscillator (OPO) and derive analytical formulas for the continuous-wave and pulsed regimes. We extend the analysis to the pulsed regime and provide simple expressions for the oscillation build-up time, pulsed threshold, and efficiency for the first time. We also explore the unique spectral features of the backward OPO when pumped with a narrow-linewidth pulsed radiation.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
V Gordienko, A. D. Szabo, M. F. C. Stephens, V. Vassiliev, C. B. Gaur, N. J. Doran
Summary: The experiment found that SBS limits the nonlinear phase shift unless mitigated, deriving corresponding limits on signal gain and conversion efficiency for fiber optic parametric devices. Air gaps and fiber tapers were examined for SBS mitigation in bidirectional loops, with an increase in SBS threshold attributed primarily to excess loss.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Physics, Applied
ChaoXia Zhang, YongLang Lai, RongGuo Yang, Kui Liu, Jing Zhang, HengXin Sun, JiangRui Gao
Summary: We achieve a significant improvement in the precision of small-tilt measurement by combining a Sagnac interferometer, balanced homodyne detection, and weak-value amplification technique. Compared with split detection, balanced homodyne detection offers smaller minimum measurable tilt and higher signal-to-noise ratio. With our experimental setup, a precision of 3.8 nrad is obtained. The results demonstrate that the combination of weak-value amplification technique and balanced homodyne detection can complement each other's advantages and perform better in certain application scenarios, such as extremely weak output and wider measurement bandwidth. Furthermore, precision can be further enhanced through experimental parameter optimization.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Joshua Combes, Austin P. Lund
Summary: Homodyne measurements are a commonly used quantum measurement method that limits to field quadrature measurement using a coherent state as the local oscillator. This paper presents a general idea that injecting nonclassical states as the local oscillator can lead to nonclassical measurements, with the specific example of injecting a superposition of coherent states, known as a Schrödinger cat state. The Kraus operators and positive operator-valued measure in this situation are derived.
Article
Engineering, Electrical & Electronic
Ahmed A. Barakat, Peter Hagedorn
Summary: This paper presents a broadband amplification method based on parametric excitation, which induces modal-coupled phase-shifted parametric excitation in multi-degree of freedom dynamic systems to destabilize the system over a wide frequency band, thereby increasing device sensitivity.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Engineering, Electrical & Electronic
Song Ruogu, Li Xinyu, Wang Jinyu, Yue Wencheng, Yu Mingbin, Wang Shuxiao, Cai Yan
Summary: This article introduces the combination of broadband technologies and folded Michelson interferometer modulators to improve their high-frequency performance and device footprint. By using different additional electric structures and electrode distribution, higher bandwidth and better performance have been achieved.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Physics, Applied
Martina Esposito, Arpit Ranadive, Luca Planat, Nicolas Roch
Summary: Quantum-limited microwave parametric amplifiers are crucial for emerging quantum technologies and applications requiring successful readout of weak microwave signals with minimal noise. This perspective focuses on traveling wave parametric amplifiers, discussing recent achievements and current challenges. Future research directions may explore these devices as platforms for multi-mode entanglement generation and single photon detectors.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Yuya Yamaguchi, Pham Tien Dat, Shingo Takano, Masayuki Motoya, Shotaro Hirata, Yu Kataoka, Junichiro Ichikawa, Satoshi Oikawa, Ryo Shimizu, Naokatsu Yamamoto, Kouichi Akahane, Atsushi Kanno, Tetsuya Kawanishi
Summary: An electro-optic frequency-domain equalizer is proposed and investigated to increase the 3-dB bandwidth of optical modulators. The equalizer can be integrated with conventional modulators using different waveguide structures. Experimental results show that integrating the equalizer can double the modulator's 3-dB bandwidth.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Christophe Dorrer, Michael Spilatro, Steven Herman, Ted Borger, Elizabeth M. Hill
Summary: Researchers demonstrated a method for nonlinear frequency conversion using a narrowband pulse, which can generate a broader spectrum in spectrally incoherent nanosecond pulses. Experimental results show that this scheme can effectively mitigate laser-plasma instabilities occurring during interaction between high-energy lasers and targets.
Article
Optics
Keisuke Kasai, Takashi Kan, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa
Summary: We describe the broadband injection-locking performance of a Fabry-Perot laser diode (FP-LD) for digital coherent transmission. By applying the FP-LD as an LO in an injection-locked homodyne receiver, we demonstrate the precise demodulation of 3, 10, and 20 Gbaud 256 QAM signals even when using a widely and randomly phase-modulated transmitter laser.
Article
Optics
N. Ekanayake, M. Spilatro, A. Bolognesi, S. Herman, S. Sampat, E. M. Hill, C. Dorrer
Summary: Spectrally incoherent laser pulses with large fractional bandwidth are needed to mitigate laser-plasma instabilities in high-energy laser-target interactions. A dual-stage high-energy optical parametric amplifier for broadband, spectrally incoherent pulses in the near-infrared was modeled, implemented, and optimized. The amplifier delivers close to 400 mJ of signal energy through noncollinear parametric interaction of 100-nJ-scale broadband, spectrally incoherent seed pulses near 1053 nm with a narrowband high-energy pump operating at 526.5 nm. Mitigation strategies for high-frequency spatial modulations caused by index inhomogeneities in the Nd:YLF rods of the pump laser are explored and discussed.
Article
Engineering, Electrical & Electronic
Vladimir Gordienko, Filipe M. Ferreira, Chandra B. Gaur, Nick J. Doran
Summary: The study focuses on polarization insensitive fiber optical parametric amplifiers utilizing a balanced polarization diversity loop with at least two unidirectional gain fibers. Three variants of looped polarization insensitive FOPAs optimized for noise figure, mitigation of nonlinear impairments, and their trade-off are described and compared. Testing results demonstrate the ability of these FOPAs to deliver low noise figures <6 dB for output signal power as high as 29 dBm while enabling polarization insensitive gain.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Xuan Zhu, Chun-Hung Chang, Carlos Gonzalez-Arciniegas, Avi Pe'er, Jacob Higgins, Olivier Pfister
Summary: The paper proposes and analyzes the simplest technique for generating light-based universal quantum computing resources, namely 2D, 3D, and n-hypercubic cluster states. This technique utilizes two standard optical components and paves the way for implementing quantum computing on chip using quantum nanophotonics.
Article
Optics
Idan Parshani, Leon Bello, Mallachi-Elia Meller, Avi Pe'er
Summary: The study explores the role of diffraction losses in Kerr-lens mode-locking, revealing that the instantaneous saturable absorber generated through diffraction depends on the spatial and temporal profiles of the pulse. Despite their importance, these losses have never been directly observed.
Article
Physics, Multidisciplinary
Leon Bello, Marcello Calvanese Strinati, Shai Ben-Ami, Avi Pe'er
Summary: Mode locking in lasers and pairwise mode locking in coupled parametric oscillators are collective effects where multiple frequency modes exhibit synchronized behavior, leading to ultra-short pulses or locked phase pairs. Despite being broadband and multimode, the emission lacks first-order coherence while demonstrating high degrees of second-order coherence. The configuration involves two coupled parametric oscillators modulated in time with an analogy to active mode locking in lasers.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Marcello Calvanese Strinati, Leon Bello, Emanuele G. Dalla Torre, Avi Pe'er
Summary: The study found that networks of parametric oscillators are not inherently Ising solvers, even near threshold. However, if the oscillators are sufficiently driven into a regime where nonlinearities play a predominant role, the network can find the correct solution.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Nir Nechushtan, Hanzhong Zhang, Mallachi Meller, Avi Pe'er
Summary: The study shows that achieving maximum nonlinear SU(1,1) visibility requires extreme collinear conditions, and near-ideal visibility of approximately 95% can be obtained in an ultra-broadband SU(1,1) interferometer.
NEW JOURNAL OF PHYSICS
(2021)
Article
Optics
Leon Bello, Yoad Michael, Michael Rosenbluh, Eliahu Cohen, Avi Pe'er
Summary: In their seminal paper, Caves and Schumaker presented a new formalism for quantum optics focusing on two-photon processes and introducing new generalized quadratures. This paper proposes a significant modification to their work by introducing a frequency-agnostic definition of two-mode quadrature, leading to more effective practical applications of the formalism.
Article
Multidisciplinary Sciences
Idan Parshani, Leon Bello, Mallachi-Elia Meller, Avi Pe'er
Summary: Kerr-lens mode-locked lasers can modify solitons in space to incorporate excess energy and overcome dispersive or diffractive loss, by breaking the spatial symmetry in the cavity.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Idan Parshani, Leon Bello, Mallachi-Elia Meller, Avi Pe'er
Summary: This paper presents a complete numerical analysis and simulation of the spatio-temporal dynamics of Kerr-lens mode-locking in a laser. The model accurately reproduces the pulse formation process and provides insights for analyzing and optimizing mode-locking operation.
APPLIED SCIENCES-BASEL
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Alexey Gorlach, Aviv Karnieli, Raphael Dahan, Eliahu Cohen, Avi Pe'er, Ido Kaminer
Summary: Free electrons can be utilized as ultrafast non-destructive photon detectors to measure photon statistics, temporal coherence, and conduct full quantum state tomography.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Article
Optics
Danko Georgiev, Leon Bello, Avishy Carmi, Eliahu Cohen
Summary: This study explores the complementarity between one-particle visibility and two-particle visibility in bipartite quantum-entangled Gaussian states implemented with continuous-variable quantum optics. A direct method for quantifying the two-particle visibility based on compatible observables is introduced, revealing a mathematical symmetry and exact complementarity in the limit of infinite Gaussian precision approaching an ideal Einstein-Podolsky-Rosen state. The results demonstrate the theoretical utility of rotated marginal distributions in elucidating the nature of two-particle visibility and provide tools for developing quantum applications employing continuous variables.