Open AccessClassical-to-quantum transition behavior between two oscillators separated in space under the action of optomechanical interaction
Author(s) -
ChengHua Bai,
Dongyang Wang,
Hong-Fu Wang,
AiDong Zhu,
Shou Zhang
Publication year - 2017
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/s41598-017-02779-w
Subject(s) - physics , quantum entanglement , quantum nonlocality , quantum , coulomb , quantum mechanics , coupling (piping) , classical mechanics , parametric statistics , action (physics) , mathematics , mechanical engineering , statistics , engineering , electron
We propose a scheme to show that the system consisting of two macroscopic oscillators separated in space which are coupled through Coulomb interaction displays the classical-to-quantum transition behavior under the action of optomechanical coupling interaction. Once the optomechanical coupling interaction disappears, the entanglement between the two separated oscillators disappears accordingly and the system will return to classical world even though there exists sufficiently strong Coulomb coupling between the oscillators. In addition, resorting to the squeezing of the cavity field generated by an optical parametric amplifier inside the cavity, we discuss the effect of squeezed light driving on this classical-to-quantum transition behavior instead of injecting the squeezed field directly. The results of numerical simulation show that the present scheme is feasible and practical and has stronger robustness against the environment temperature compared with previous schemes in current experimentally feasible regimes. The scheme might possibly help us to further clarify and grasp the classical-quantum boundary.