Article
Optics
Yue Mu, Lu Qin, Zeyun Shi, Guoxiang Huang
Summary: In this study, we investigated the Kerr and magneto-optical effects for a probe laser field in a cold Rydberg atomic gas through double electromagnetically induced transparency. The system showed giant nonlocal self- and cross-Kerr nonlinearities contributed by Rydberg-Rydberg interaction, and the theoretical results were in close agreement with recent experimental findings. Additionally, we demonstrated the potential for designing atomic magnetometers with high precision and promising applications in nonlocal nonlinear magneto-optics and optical information processing based on Rydberg atomic gases.
Article
Physics, Multidisciplinary
Nikola Opacak, Sandro Dal Cin, Johannes Hillbrand, Benedikt Schwarz
Summary: Optical nonlinearities can coherently couple amplitude and phase of light, forming periodic waveforms known as optical frequency combs. The study shows that Bloch gain, a nonclassical phenomenon predicted in the 1930s, plays an essential role in comb formation, leading to a giant Kerr nonlinearity and the formation of solitonlike structures, paving the way for electrically driven Kerr combs.
PHYSICAL REVIEW LETTERS
(2021)
Article
Mechanics
D. V. Shaykin, A. M. Kamchatnov
Summary: We study the propagation of high-frequency wave packets in a large-scale background wave described by dispersionless hydrodynamic equations. The influence of the wave packet on the background wave is neglected, allowing for independent determination of the background wave's evolution. However, the propagation of the wave packet depends significantly on the background wave, and we use the geometric optics approximation and Hamilton equations to analyze it. By deriving equations for the carrier wave number as a function of the background wave parameters, we can integrate the Hamilton equation to find the path of the packet. We apply this theory to the problem of wave packet propagation along an expanding large-scale wave governed by the shallow water equations, which correspond to the dispersionless limit of the defocusing nonlinear Schrodinger equation.
Article
Optics
Lei Du, Yong Li
Summary: This study focuses on single-photon scattering through a giant Lambda-type atom, examining interference effects and frequency conversion. It is found that optimal frequency conversion is phase dependent, and combining giant-atom interference with Sagnac quantum interference can achieve efficient frequency conversion with unit efficiency.
Article
Quantum Science & Technology
Wei Zhang, Shutian Liu, Shou Zhang, Hong-Fu Wang
Summary: The single- and two-photon blockade effects in an optical cavity with a nonlinear Kerr medium coupled with a three-level atom have been investigated. It was found that the Kerr nonlinearity can significantly enhance both the single- and two-photon blockade effects, with a larger contribution to the single-photon blockade. The transition from single-photon blockade to two-photon blockade can be achieved through control of the atom-cavity coupling and Kerr nonlinearity.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
I Tutunnikov, K. Rajitha, I. Sh Averbukh
Summary: The study theoretically investigates the echo phenomenon in a Kerr-nonlinear oscillator, identifying two types of echoes - quantum and classical - on long and short time scales respectively. The mechanisms of the echoes are discussed along with their sensitivity to dissipation, with potential implications for studying decoherence processes in systems related to quantum information processing.
Article
Physics, Multidisciplinary
Dan-Dan Liang, Xin Shen, Zhi Li
Summary: This study investigates the topological band structure in a system with controllable Dirac points from the perspective of wave packet dynamics. The results show that the emergence and annihilation of Dirac points can be revealed by the dynamical behaviors of wave packets. The study also demonstrates that the winding number associated with the Dirac point and parabolic point can be determined via the center of mass and spin texture of wave packets.
CHINESE PHYSICS LETTERS
(2023)
Article
Physics, Multidisciplinary
Zhu-Xin Wang, Hui Yang, Xiao-Qian Wang, Hong-Yu Lin, Zhi-Hai Yao
Summary: We investigate conventional photon blockade in a non-degenerate four wave mixing system with Kerr non-linearity. The corresponding condition to implement photon anti-bunching effect is acquired by analyzing the Hamiltonian of the system. The analytical conditions are consistent with numerical results, and photon blockade can be realized in this system.
Article
Materials Science, Multidisciplinary
Ziyu Wang, Abdullah Rasmita, Guankui Long, Disheng Chen, Chusheng Zhang, Oscar Garcia Garcia, Hongbing Cai, Qihua Xiong, Wei-bo Gao
Summary: Photon superbunching, achieved in this study using CsPbBr3 quantum dots, is a crucial resource for quantum communication and computation. The large g((2))(0) value of 30 was obtained from a single CsPbBr3 QD emission at cryogenic temperature, identifying cascaded emission as the cause of superbunching. This research has implications on the fundamental understanding and application of single perovskite QD emission as a quantum light source.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Physics, Applied
Wei-Han Liu, Miao Yin
Summary: This paper theoretically analyzes the transmission characteristics of a magnon-photon coupling system based on ultrastrong optomechanical-like coupling via the cross-Kerr interaction. It is found that the group delay of the system can be significantly improved by two to three orders of magnitude compared to previous studies, leading to enhanced slow light effect. The manipulation of driving power, frequency detuning, and magnetic field strength allows precise adjustment of the magnitude, bandwidth, and frequency control of the slow light. The results from this paper offer new possibilities for optical memory and all-optical network construction.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Astronomy & Astrophysics
Thomas Osburn, Nami Nishimura
Summary: This paper presents a new method to overcome numerical challenges in calculating the Lorenz gauge self-force. The calculation is crucial for generating waveform templates for extreme mass-ratio inspirals, which are significant sources of gravitational waves for future space missions.
Article
Physics, Applied
Yingfei Sun, Zhong-guo Li, Yu Fang, Xingzhi Wu, Wenfa Zhou, Zhitai Jia, Junyi Yang, Yinglin Song
Summary: This study reports the spectral dependence of the three-photon absorption coefficient γ and third-order nonlinear refractive index n(2) in pristine, Sn-doped and Fe-doped β-Ga2O3 crystals. Fe doping significantly enhances the γ value in the lower wavelength range, while Sn and Fe doping have negligible impact on n(2).
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Zeyu Li, Qiang Yan, Yu Qin, Weipeng Kong, Mingrui Zou, Xun Zhou
Summary: In this study, subwavelength resolution, full-field, and lensless terahertz ptychography are demonstrated by longitudinally shifting the sample. Extended illumination and a preprocessing algorithm are used to improve imaging throughput. The proposed reconstruction algorithm combines multi-plane phase retrieval and ptychographic reconstruction to simultaneously retrieve the object and the probe. The method is applicable to other wavebands and has been successfully applied to imaging biological materials, polymer samples, and resolution targets.
Article
Physics, Multidisciplinary
Chang-Mei Zheng, Wei Zhang, Dong-Yang Wang, Xue Han, Hong-Fu Wang
Summary: We propose a scheme to enhance photon blockades simultaneously in two microwave cavities connected by a giant atom. By constructing an anharmonic eigenenergy spectrum through resonantly coupled giant atoms, the enhanced photon blockades can occur in both cavities at the same time when only one cavity is weakly driven. When both the cavity and the atom are driven, stronger photon blockades can be achieved in both cavities through quantum interference. The scheme provides a prospective path to achieve simultaneous photon blockades in two indirectly coupled cavities and offers a promising method for generating high-quality and brightness single photon sources.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Multidisciplinary
Ji-Kun Xie, Sheng-Li Ma, Xin-Ke Li, Ya-Long Ren, Ming-tao Cao, Fu-Li Li
Summary: In this work, an efficient method to generate and exponentially enhance the cross-Kerr nonlinearity in quantum optomechanics is proposed. By modulating the mechanical spring constant, a nonlinear two-phonon drive can be acquired to amplify the mechanical zero-point fluctuations, resulting in the exponentially enhanced cross-Kerr interaction between the two optical modes. As applications, it is proposed to generate anticorrelated photon blockade and stabilize one-photon Fock state based on the enhanced nonlinearity.
ANNALEN DER PHYSIK
(2022)
Article
Education, Scientific Disciplines
Derrek J. Wilson, Julio Gea-Banacloche
AMERICAN JOURNAL OF PHYSICS
(2012)
Editorial Material
Mathematics, Interdisciplinary Applications
Derek Abbott, Julio Gea-Banacloche, Paul C. W. Davies, Stuart Hameroff, Anton Zeilinger, Jens Eisert, Howard Wiseman, Sergey M. Bezrukov, Hans Frauenfelder
FLUCTUATION AND NOISE LETTERS
(2008)
Article
Computer Science, Theory & Methods
Tokishiro Karasawa, Masanao Ozawa, Julio Gea-Banacloche, Kae Nemoto
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
(2008)
Article
Physics, Multidisciplinary
Tokishiro Karasawa, Julio Gea-Banacloche, Masanao Ozawa
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2009)
Article
Optics
J. Gea-Banacloche
OPTICS COMMUNICATIONS
(2010)
Article
Optics
Julio Gea-Banacloche, Mayo Miller
Article
Optics
Haibin Wu, Min Xiao, J. Gea-Banacloche
Article
Optics
Julio Gea-Banacloche, Leno M. Pedrotti
Article
Optics
Jiteng Sheng, Haibin Wu, M. Mumba, J. Gea-Banacloche, Min Xiao
Article
Optics
Julio Gea-Banacloche, Leno M. Pedrotti
Article
Optics
Julio Gea-Banacloche
Article
Physics, Multidisciplinary
Haibin Wu, J. Gea-Banacloche, Min Xiao
PHYSICAL REVIEW LETTERS
(2008)
Article
Engineering, Electrical & Electronic
Julio Gea-Banacloche
PROCEEDINGS OF THE IEEE
(2010)
Article
Optics
Haibin Wu, J. Gea-Banacloche, Min Xiao