Release Time:2020-02-17  Hits:

Indexed by: Journal Papers

Date of Publication: 2020-01-01

Journal: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

Included Journals: SCIE、EI

Volume: 37

Issue: 1

Page Number: 1-8

ISSN: 0740-3224

Abstract: The generation of a superposition state of a single-mode or two-mode coherent state is always an attractive topic. We propose schemes to generate the Schrodinger cat state and entangled coherent state of a mechanical oscillator in a hybrid optomechanical system. By introducing time-dependent coupling between the atom and photon, an effective Hamiltonian is deduced, where a tripartite interaction with time-dependent coupling is achieved. The effect of relatively high free energy can be cancelled so that we can obtain a relatively large average phonon number. Including dissipation, we derive an analytic solution of the system and further discuss the decoherence and disentanglement. In addition, a steady phonon laser can be reached. (C) 2019 Optical Society of America.