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Enhanced Entanglement Between Two Mechanical Resonators in Two Optomechanical Cavities with an Atomic Medium

E. Wu, Danyang Li, FengZhi Li +1 more

International Journal of Theoretical PhysicsFeb 13, 20174 citations

Generation and detection of large and robust entanglement between two different mechanical resonators in cavity optomechanics

J Li, I Moaddel Haghighi, Nicola Malossi +2 more

We investigate a general scheme for generating, either dynamically or in the steady state, continuous variable entanglement between two mechanical resonators with different frequencies. We employ an optomechanical system in which a single optical cavity mode driven by a suitably chosen two-tone field is coupled to the two resonators. Significantly large mechanical entanglement can be achieved, which is extremely robust with respect to temperature.

arXiv:1506.03126New Journal of PhysicsOct 19, 2015106 citations

Quantum effects in optomechanical systems

Claudiu Genes, Andrea Mari, David Vitali +1 more

The search for experimental demonstrations of the quantum behavior of macroscopic mechanical resonators is a fastly growing field of investigation and recent results suggest that the generation of quantum states of resonators with a mass at the microgram scale is within reach. In this chapter we give an overview of two important topics within this research field: cooling to the motional ground state, and the generation of entanglement involving mechanical, optical and atomic degrees of freedom. We focus on optomechanical systems where the resonator is coupled to one or more driven cavity modes by the radiation pressure interaction. We show that robust stationary entanglement between the mechanical resonator and the output fields of the cavity can be generated, and that this entanglement can be transferred to atomic ensembles placed within the cavity. These results show that optomechanical devices are interesting candidates for the realization of quantum memories and interfaces for continuous variable quantum communication networks.The search for experimental demonstrations of the quantum behavior of macroscopic mechanical resonators is a fastly growing field of investigation and recent results suggest that the generation of quantum states of resonators with a mass at the microgram scale is within reach. In this chapter we give an overview of two important topics within this research field: cooling to the motional ground state, and the generation of entanglement involving mechanical, optical and atomic degrees of freedom. We focus on optomechanical systems where the resonator is coupled to one or more driven cavity modes by the radiation pressure interaction. We show that robust stationary entanglement between the mechanical resonator and the output fields of the cavity can be generated, and that this entanglement can be transferred to atomic ensembles placed within the cavity. These results show that optomechanical devices are interesting candidates for the realization of quantum memories and interfaces for continuous variable quantum communication networks.

arXiv:0901.2726Jan 19, 20096 citations

Pairwise entanglement in a three-cavity optomechanical system

Abderrahim Lakhfif, Abdelkader Hidki, Jamal El Qars +1 more

Physics Letters AJun 8, 202218 citations

Optomechanical entanglement in a whispering-gallery cavity

米贤武, 柏江湘, 李德俊

中国物理B：英文版Jan 1, 20120 citations

Mechanical entanglement detection in an optomechanical system

Francesco Massel

We propose here a setup to generate and evaluate the entanglement between two mechanical resonators in a cavity optomechanical setting. As in previous proposals, our scheme includes two driving pumps allowing for the generation of two-mode mechanical squeezing. In addition, we include here four additional probing tones, which allow for the separate evaluation of the collective mechanical quadratures required to estimate the Duan quantity, thus allowing us to infer whether the mechanical resonators are entangled.We propose here a setup to generate and evaluate the entanglement between two mechanical resonators in a cavity optomechanical setting. As in previous proposals, our scheme includes two driving pumps allowing for the generation of two-mode mechanical squeezing. In addition, we include here four additional probing tones, which allow for the separate evaluation of the collective mechanical quadratures required to estimate the Duan quantity, thus allowing us to infer whether the mechanical resonators are entangled.

arXiv:1705.05130Physical Review AJun 14, 201710 citations

Entanglement Generation Between Two Mechanical Resonators in Two Optomechanical Cavities

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