Quantum and classical phases in optomechanics

被引：17

作者：

Armata, Federico ^{[1
]}

Latmiral, Ludovico ^{[1
]}

Pikovski, Igor ^{[2
,3
]}

Vanner, Michael R. ^{[4
]}

Brukner, Caslav ^{[5
,6
]}

Kim, M. S. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, QOLS, London SW7 2AZ, England

[2] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA

[3] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[4] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[5] Univ Vienna, Fac Phys, Boltzmanngasse 5, A-1090 Vienna, Austria

[6] Inst Quantum Opt & Quantum Informat, Boltzmanngasse 3, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW A | 2016年 / 93卷 / 06期

基金：

欧盟第七框架计划; 奥地利科学基金会;

关键词：

FABRY-PEROT CAVITIES; RESONANCE; LIMITS;

D O I：

10.1103/PhysRevA.93.063862

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The control of quantum systems requires the ability to change and read-out the phase of a system. The noncommutativity of canonical conjugate operators can induce phases on quantum systems, which can be employed for implementing phase gates and for precision measurements. Here we study the phase acquired by a radiation field after its radiation pressure interaction with a mechanical oscillator, and compare the classical and quantum contributions. The classical description can reproduce the nonlinearity induced by the mechanical oscillator and the loss of correlations between mechanics and optical field at certain interaction times. Such features alone are therefore insufficient for probing the quantum nature of the interaction. Our results thus isolate genuine quantum contributions of the optomechanical interaction that could be probed in current experiments.

引用

页数：9

共 33 条

[1] Entanglement and decoherence of a micromechanical resonator via coupling to a Cooper-pair box [J].