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We conducted a numerical simulation of ventilated supercavitation from a forward-facing cavitator in unsteady flows generated by a gust generator under different gust angles of attack and gust frequencies. The numerical method is validated…

Fluid Dynamics · Physics 2019-05-21 Renfang Huang , Siyao Shao , Roger E A Arndt , Xianwu Luo , Jiarong Hong

We discuss the production of gravity waves from the fragmentation of a supersymmetric condensate in the early universe. Supersymmetry predicts the existence of flat directions in the potential. At the end of inflation, the scalar fields…

Cosmology and Nongalactic Astrophysics · Physics 2009-07-09 Alexander Kusenko , Anupam Mazumdar , Tuomas Multamaki

We study theoretically interaction of optically-pumped excitons with acoustic waves in planar semiconductor nanostructures in the strongly nonlinear regime. We start with the multimode optomechanical lasing regime for optical pump frequency…

Mesoscale and Nanoscale Physics · Physics 2022-05-11 Alexey V. Yulin , Alexander V. Poshakinskiy , Alexander N. Poddubny

We predict the generation of noncritically squeezed light through the spontaneous rotational symmetry breaking occurring in a Kerr cavity. The model considers a $\chi^{(3)}$ cavity that is pumped by two Gaussian beams of frequencies…

The ability to engineer the quantum state of traveling optical fields is a central requirement for quantum information science and technology, including quantum communication, computing and metrology. In this video article, we describe the…

Quantum Physics · Physics 2014-07-02 Olivier Morin , Jianli Liu , Kun Huang , Felippe A. S. Barbosa , Claude Fabre , Julien Laurat

Quantum fluids of light in a nonlinear planar microcavity can exhibit antibunched photon statistics at short distances due to repulsive polariton interactions. We show that, despite the weakness of the nonlinearity, the antibunching signal…

Compressible electron flow through a narrow cavity is theoretically unstable, and the oscillations occurring during the instability have been proposed as a method of generating Terahertz radiation. We numerically demonstrate that the…

Mesoscale and Nanoscale Physics · Physics 2021-01-08 Christian B. Mendl , Marco Polini , Andrew Lucas

A non-stationary one-dimensional cavity can be described by the time-dependent and multi-mode effective Hamiltonian of the so-called dynamical Casimir effect. Due to the non-adiabatic boundary conditions imposed in one of the cavity…

Quantum Physics · Physics 2021-09-14 I. Ramos-Prieto , R. Román-Ancheyta , J. Récamier , H. M. Moya-Cessa

A novel, 3-dimensional, convex, multi-pass optical cavity with partially-chaotic ray dynamics is presented. The light is localized near stable, long-path length trajectories supported by the cavity, and beam diffraction is suppressed by the…

Optics · Physics 2007-05-23 Jonathan A. Fan , Evgenii E. Narimanov , Claire Gmachl

We have explored the nonlinear dynamics of an optomechanical system consisting of an illuminated Fabry-Perot cavity, one of whose end-mirrors is attached to a vibrating cantilever. Such a system can experience negative light-induced damping…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Max Ludwig , Clemens Neuenhahn , Constanze Metzger , Alexander Ortlieb , Ivan Favero , Khaled Karrai , Florian Marquardt

The geometrical phase of a time-dependent singular oscillator is obtained in the framework of Gaussian wave packet. It is shown by a simple geometrical approach that the geometrical phase is connected to the classical nonadiabatic Hannay…

Quantum Physics · Physics 2007-05-23 Mustapha Maamache , Hacene Bekkar

Synchronously pumped optical parametric oscillators (SPOPOs) are optical cavities containing a nonlinear crystal capable of down-converting a frequency comb to lower frequencies. These have received a lot of attention lately, because their…

Quantum Physics · Physics 2017-10-11 Carlos Navarrete-Benlloch , Giuseppe Patera , Germán J. de Valcárcel

Systems of coupled optical parametric oscillators (OPOs) forming an Ising machine are emerging as large-scale simulators of the Ising model. The advances in computer science and nonlinear optics have triggered not only the physical…

Quantum Physics · Physics 2024-06-25 Marcello Calvanese Strinati , Claudio Conti

Quantum states at optical frequencies are often generated inside cavities to facilitate strong nonlinear interactions. However, measuring these quantum states with traditional homodyne techniques poses a challenge, as outcoupling from the…

We study the classical dynamics of a membrane inside a cavity in the situation where this optomechanical system possesses a reflection symmetry. Symmetry breaking occurs through supercritical and subcritical pitchfork bifurcations of the…

Quantum Physics · Physics 2017-01-11 C. Wurl , A. Alvermann , H. Fehske

We present a convenient and efficient scheme to generate arbitrarily multipartite continuous-variable entanglement via mechanical oscillator displacement induced by two strong input pump fields in the conventional single-cavity…

Quantum Physics · Physics 2022-04-20 Xihua Yang , Junxiang Zhang , Jingping Xu , Ligang Wang

The quantum features of ultrashort-pulse optical parametric oscillators (OPOs) are investigated theoretically in the nonlinear regime near and above threshold. Viewing the pulsed OPO as a multimode open quantum system, we rigorously derive…

Recent experimental progress in cavity optomechanics has allowed cooling of mesoscopic mechanical oscillators via dynamic backaction provided by the parametric coupling to either an optical or an electrical resonator. Here we analyze the…

Mesoscale and Nanoscale Physics · Physics 2010-07-29 J. M. Dobrindt , I. Wilson-Rae , T. J. Kippenberg

We consider the interaction between a Bose-Einstein condensate and a single-mode quantized light field in the presence of a strong far off-resonant pump laser. The dynamics is characterized by an exponential instability, hence the system…

Condensed Matter · Physics 2009-10-31 M. G. Moore , O. Zobay , P. Meystre

Optomechanics concerns with the coupling between optical cavities and mechanical resonators. Most early works are concentrated in the physics of optomechanics in the small-displacement regime and consider one single optical cavity mode…

Quantum Physics · Physics 2015-06-22 Ming Gao , Fuchuan Lei , Chuanguang Du , Gui Lu Long