Enhancing quantum effects via periodic modulations in optomechanical systems

被引:115
作者
Farace, Alessandro [1 ]
Giovannetti, Vittorio
机构
[1] NEST CNR INFM, I-56126 Pisa, Italy
来源
PHYSICAL REVIEW A | 2012年 / 86卷 / 01期
关键词
OSCILLATOR;
D O I
10.1103/PhysRevA.86.013820
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Parametrically modulated optomechanical systems have been recently proposed as a simple and efficient setting for the quantum control of a micromechanical oscillator: relevant possibilities include the generation of squeezing in the oscillator position (or momentum) and the enhancement of entanglement between mechanical and radiation modes. In this paper we further investigate this modulation regime, considering an optomechanical system with one or more parameters being modulated over time. We first apply a sinusoidal modulation of the mechanical frequency and characterize the optimal regime in which the visibility of purely quantum effects is maximal. We then introduce a second modulation on the input laser intensity and analyze the interplay between the two. We find that an interference pattern shows up, so that different choices of the relative phase between the two modulations can either enhance or cancel the desired quantum effects, opening new possibilities for optimal quantum control strategies.
引用
收藏
页数:12
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