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论文类型：期刊论文

发表时间：2019-11-01

发表刊物：ANNALEN DER PHYSIK

收录刊物：SCIE

卷号：531

期号：11

ISSN号：0003-3804

关键字：coherent; optomechanical system; squeezed coherent cat state

摘要：A squeezed-coherent-cat state (SCCS) in a mechanical system not only plays an important role for macroscopic quantum coherence, but also can be a carrier for quantum information. A scheme to generate a SCCS in a two-mode optomechanical system is proposed, in which the modulated hopping interaction of two cavities is introduced. The two cavity modes couple with the same mechanical mode with linear and quadratic interaction, respectively. The SCCS is analytically deduced under an appropriate initial state, and the average phonon number and the parameter of squeeze are numerically calculated. Wigner function shown the properties of superposition and squeezing is plotted. Including the dissipation of the environment, the results show that a high quality mechanical resonator and a low noise environment are required to obtain high fidelity.