Generating Squeezed States of Nanomechanical Resonator via a Flux Qubit in a Hybrid System  

作　　者：王朝全 邹健 张智明 

机构地区：[1]School of Physics,Beijing Institute of Technology [2]Laboratory of Nanophotonic Functional Materials and Devices,SIPSE and LQIT,South China Normal University

出　　处：《Chinese Physics Letters》2016年第2期34-38,共5页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11274043 and 60978009;the Major Research Plan of the National Natural Science Foundation of China under Grant No 91121023

摘　　要：We propose a scheme for generating squeezed states based on a superconducting hybrid system. Our system consists of a nanomeehanical resonator, a superconducting flux qubit, and a superconducting transmission line resonator. Using our proposal, one can easily generate the squeezed states of the nanomechanical resonator. In our scheme, the nonlinear interaction between the nanomechanical resonator and the superconducting transmission line resonator can be implemented by the flux qubit as ＇nonlinear media＇ with a tunable Josephson energy. The realization of the nonlinearity does not need any operations on the flux qubit and just needs to adiabatically keep it at the ground state, which can greatly decrease the effect of the decoherenee of the flux qubit on the squeezed ef^ciency.We propose a scheme for generating squeezed states based on a superconducting hybrid system. Our system consists of a nanomeehanical resonator, a superconducting flux qubit, and a superconducting transmission line resonator. Using our proposal, one can easily generate the squeezed states of the nanomechanical resonator. In our scheme, the nonlinear interaction between the nanomechanical resonator and the superconducting transmission line resonator can be implemented by the flux qubit as ＇nonlinear media＇ with a tunable Josephson energy. The realization of the nonlinearity does not need any operations on the flux qubit and just needs to adiabatically keep it at the ground state, which can greatly decrease the effect of the decoherenee of the flux qubit on the squeezed ef^ciency.

关 键 词：of on IS as IT SFQ Generating Squeezed States of Nanomechanical Resonator via a Flux Qubit in a Hybrid System SQUID in for 

分 类 号：TN751.2[电子电信—电路与系统] TP38[自动化与计算机技术—计算机系统结构]