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We provide a fully analytical treatment for the partial refrigeration of the thermal motion of a quantum mechanical resonator under the action of feedback. As opposed to standard cavity optomechanics where the aim is to isolate and cool a…

Quantum Physics · Physics 2019-12-10 Christian Sommer , Claudiu Genes

We consider a cavity optomechanical cooling configuration consisting of a mechanical resonator (denoted as resonator b) and an electromagnetic resonator (denoted as resonator a), which are coupled in such a way that the effective resonance…

Quantum Physics · Physics 2015-05-28 Eyal Buks

Degenerate optomechanical parametric oscillators are optical resonators in which a mechanical degree of freedom is coupled to a cavity mode that is nonlinearly amplified via parametric down-conversion of an external pumping laser. Below a…

In this paper, we propose two quantum optomechanical arrangements that permit the dissipation-enabled generation of steady two-mode mechanical squeezed states. In the first setup, the mechanical oscillators are placed in a two-mode optical…

Quantum Physics · Physics 2015-06-12 Huatang Tan , Gaoxiang Li , P. Meystre

We investigate the role of time delay in cold-damping optomechanics with multiple mechanical resonances. For instantaneous electronic response, it was recently shown in \textit{Phys. Rev. Lett. \textbf{123}, 203605 (2019)}, that a single…

Quantum Physics · Physics 2020-09-02 Christian Sommer , Alekhya Ghosh , Claudiu Genes

In this paper we study cavity optomechanical systems in which the position of a mechanical oscillator modulates both the resonance frequency (dispersive coupling) and the linewidth (dissipative coupling) of a cavity mode. Using a quantum…

Quantum Physics · Physics 2013-05-21 Talitha Weiss , Christoph Bruder , Andreas Nunnenkamp

Studying the interplay between multiple coupled mechanical resonators is a promising new direction in the field of optomechanics. Understanding the dynamics of the interaction can lead to rich new effects, such as enhanced coupling and…

We propose a scheme in which the cooling of a mechanical resonator is achieved by exposing the optomechanical system to a non-Markovian environment. Because of the backflow from the non-Markovian environment, the phonon number can go beyond…

Quantum Physics · Physics 2016-07-06 Wen-Zhao Zhang , Jiong Cheng , Wen-Dong Li , Ling Zhou

We propose to cool a mechanical resonator close to its ground state via an electromagnetically-induced-transparency- (EIT-) like cooling mechanism in a double-cavity optomechanical system, where an additional cavity couples to the original…

Quantum Physics · Physics 2015-06-22 Yujie Guo , Kai Li , Wenjie Nie , Yong Li

Experiments in the field of optomechanics do not yet fully exploit the photon polarization degree of freedom. Here experimental results for an optomechanical interaction in a polarization nondegenerate system are presented and schemes are…

Quantum Physics · Physics 2016-12-14 F. M. Buters , M. J. Weaver , H. J. Eerkens , K. Heeck , S. de Man , D. Bouwmeester

Quantum manipulation of macroscopic mechanical systems is of great interest in both fundamental physics and applications ranging from high-precision metrology to quantum information processing. A crucial goal is to cool the mechanical…

Quantum Physics · Physics 2014-11-17 Yong-Chun Liu , Yu-Wen Hu , Chee Wei Wong , Yun-Feng Xiao

We investigate a hybrid quantum system consisting of a cavity optomechanical device optically coupled to an ultracold quantum gas. We show that the dispersive properties of the ultracold gas can be used to dramatically modify the…

Quantum Physics · Physics 2015-06-22 F. Bariani , S. Singh , L. F. Buchmann , M. Vengalattore , P. Meystre

The quantum ground state of a massive mechanical system is a steppingstone for investigating macroscopic quantum states and building high fidelity sensors. With the recent achievement of ground-state cooling of a single motional mode,…

Ground-state cooling of mechanical motion by coupling to a driven optical cavity has been demonstrated in various optomechanical systems. In our work, we provide a so far missing thermodynamic performance analysis of optomechanical sideband…

Optomechanics is a prime example of light matter interaction, where photons directly couple to phonons, allowing to precisely control and measure the state of a mechanical object. This makes it a very appealing platform for testing…

We propose a novel and experimentally feasible approach to achieve high-efficiency ground-state cooling of a mechanical oscillator in an optomechanical system under the deeply unresolved sideband condition with the assistance of both…

Quantum Physics · Physics 2025-01-03 S. S. Zheng , F. X. Sun , M. Asjad , G. W. Zhang , J. Huo , J. Li , J. Zhou , Z. Ma , Q. Y. He

Ground-state cooling of mesoscopic mechanical resonators is a fundamental requirement for test of quantum theory and for implementation of quantum information. We analyze the cavity optomechanical cooling limits in the intermediate coupling…

Optics · Physics 2015-06-22 Yong-Chun Liu , Rui-Shan Liu , Chun-Hua Dong , Yan Li , Qihuang Gong , Yun-Feng Xiao

A pulsed cooling scheme for optomechanical systems is presented that is capable of cooling at much faster rates, shorter overall cooling times, and for a wider set of experimental scenarios than is possible by conventional methods. The…

We propose and analyze theoretically a cavity optomechanical analog of a heat pump that uses a polariton fluid to cool mechanical modes coupled to a single pre-cooled phonon mode via external modulation of the substrate of the mechanical…

Quantum Physics · Physics 2015-12-07 Ying Dong , F. Bariani , P. Meystre

Dissipation and the accompanying fluctuations are often seen as detrimental for quantum systems, since they are associated with fast relaxation and loss of phase coherence. However, it has been proposed that a pure state can be prepared if…