Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2016-08-01

Journal: INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

Included Journals: Scopus、SCIE

Volume: 55

Issue: 8

Page Number: 3697-3705

ISSN: 0020-7748

Key Words: Stationary entanglement; Coupled optomechanical cavities; Optical parametric amplifiers

Abstract: A scheme to generate the stationary entanglement of two distant coupled optical cavities placed optical parametric amplifiers is proposed. We study how the optical parametric amplifiers can affect the entanglement behaviors of the movable mirrors and the cavity fields. With the existence of optical parametric amplifiers, we show that larger stationary entanglement of optical and mechanical modes can be obtained and the entanglement increases with the increasing parametric gain. Especially, the degree of entanglement between the two cavity fields is more pronouncedly enhanced. Moreover, for a fixed parametric gain, the entanglement of distant cavity optomechanical systems increases as the input laser power is increased.