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Parametric down-conversion in a nonlinear crystal is a widely employed technique for generating quadrature squeezed light with multiple modes, which finds applications in quantum metrology, quantum information and communication. Here we…

Quantum Physics · Physics 2024-07-29 Valentin Averchenko , Danil Malyshev , Kirill Tikhonov

A synchronously pumped optical parametric oscillator (SPOPO) operating at 93 MHz is used to generate squeezed states at 1035 nm. The system features a counter-propagating beam at the same wavelength as the quantum state, which…

Quantum models for synchronously pumped type I optical parametric oscillators (SPOPO) are presented. The study of the dynamics of SPOPOs, which typically involves millions of coupled signal longitudinal modes, is significantly simplified…

Quantum Physics · Physics 2015-05-13 Giuseppe Patera , Nicolas Treps , Claude Fabre , German J. De Valcarcel

We have developed the full theory of a synchronously pumped type I optical parametric oscillator (SPOPO). We derive expressions for the oscillation threshold and the characteristics of the generated mode-locked signal beam. We calculate the…

Quantum Physics · Physics 2007-05-23 German J. De Valcarcel , Giuseppe Patera , Nicolas Treps , Claude Fabre

We study the effect of homodyne detector visibility on the measurement of quadrature squeezing for a spatially multi-mode source of two-mode squeezed light. Sources like optical parametric oscillators (OPO) typically produce squeezing in a…

Quantum Physics · Physics 2020-01-20 Prasoon Gupta , Rory W. Speirs , Kevin M. Jones , Paul D. Lett

Optical microcavities are often used to realize enhanced nonlinear optical interactions for highly efficient second-harmonic generation. With increased pump power, the efficiency of nonlinear frequency conversion can be increased further,…

Optics · Physics 2018-08-08 Ming Li , Chang-Ling Zou , Chun-Hua Dong , Xi-Feng Ren , Dao-Xin Dai

We demonstrate the generation of broad-band continuous-wave optical squeezing down to 200Hz using a below threshold optical parametric oscillator (OPO). The squeezed state phase was controlled using a noise locking technique. We show that…

Quantum Physics · Physics 2009-11-10 K. McKenzie , N. Grosse , W. P. Bowen , S. E. Whitcomb , M. B. Gray , D. E. McClelland , P. K. Lam

Colloidal dispersions are widely found in systems ranging from natural environments to industrial materials. Their macroscopic properties such as viscosity and light scattering depend on their dispersibility, which is characterized by…

Soft Condensed Matter · Physics 2026-05-22 Keita Saito , Fumito Araoka

We present a detailed analysis of the multimode quantum state embedded in an optical frequency comb generated by a Synchronously Pumped Optical Parametric Oscillator (SPOPO). The full covariance matrix of the state is obtained with homodyne…

We investigate the effect of spatial dispersion phenomenon on the performance of graphene-based plasmonic devices at THz. For this purpose, two different components, namely a phase shifter and a low-pass filter, are taken from the…

Mesoscale and Nanoscale Physics · Physics 2014-10-01 Diego Correas-Serrano , Juan Sebastian Gomez-Diaz , Alejandro Alvarez-Melcon

The influence of the phase fluctuation of the pump laser on the phase-correlation between the signal and idler modes of the output fields from as non-degenerate optical parametric oscillator operating above oscillation threshold was…

Quantum Physics · Physics 2009-11-13 Dong Wang , Yana Shang , Zhihui Yan , Wenzhe Wang , Xiaojun Jia , Changde Xie , Kunchi Peng

In this paper, we theoretically investigate the displacement and momentum fluctuations spectra of the movable mirror in a standard optomechanical system driven by a finite bandwidth squeezed vacuum light accompanying a coherent laser field.…

Quantum Physics · Physics 2016-06-15 H. Lotfipour , S. Shahidani , R. Roknizadeh , M. H. Naderi

We report the first experimental demonstration of squeezed lasing in a reservoir-engineered optical parametric oscillator (OPO). The OPO provides a basis of squeezed states and parametric amplification in lasing emission, whose vacuum…

Quantum Physics · Physics 2025-07-09 Yuhang Tian , Yajun Wang , Weijie Wang , Xiaocong Sun , Yuhang Li , Shaoping Shi , Long Tian , Yaohui Zheng

Experiment, theory, and simulation are employed to understand the dispersion of colloidal particles in a periodic array of oscillating harmonic traps generated by optical tweezers. In the presence of trap oscillation, a non-monotonic and…

Soft Condensed Matter · Physics 2023-01-18 Joseph M. Barakat , Sho C. Takatori

Integrated microring resonators have a broad range of applications in diverse fields with the potential to design compact, robust, energy-efficient devices crucial for quantum applications. Degenerate optical parametric oscillations (DOPOs)…

The effects of a frequency-modulated pump on stimulated Brillouin scattering (SBS) in a flowing plasma are investigated by theoretical analysis, three-wave simulations, and kinetic simulations. The resonance point of SBS oscillates in a…

Plasma Physics · Physics 2024-01-09 Y. Chen , C. Y. Zheng , Z. J. Liu , L. H. Cao , C. Z. Xiao

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

The squeezed state is important in quantum metrology and quantum information. The most effective generation tool known is the optical parametric oscillator (OPO). Currently, only the squeezed states of lower-order spatial modes can be…

Quantum Physics · Physics 2020-04-22 Long Ma , Hui Guo , Hengxin Sun , Kui Liu , Bida Su , Jiangrui Gao

We present in this paper a general model for determining the quantum properties of the light generated by a synchronously pumped optical parametric oscillator (SPOPO) operating below threshold. This model considers time and frequency on an…

Quantum Physics · Physics 2012-04-12 Shifeng Jiang , Nicolas Treps , Claude Fabre

The nonlinear propagation of optical pulses in dielectric waveguides and resonators provides a laboratory to investigate a wide range of remarkable interactions. Many of the resulting phenomena find applications in optical systems. One…

Optics · Physics 2016-06-06 Qi-Fan Yang , Xu Yi , Ki Youl Yang , Kerry Vahala
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