Generating Squeezed States in Solid State Circuits  

作　　者：WEN Yi-Huo LONG Gui-Lu 

机构地区：[1]Key Laboratory for Atomic and Molecular NanoSciences and Department of Physics, Tsinghua University, Beijing 100084, China [2]Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China

出　　处：《Communications in Theoretical Physics》2008年第5期1207-1210,共4页理论物理通讯（英文版）

基　　金：The project supported by the National Fundamental Research Program under Grant No.2006CB921106;National Natural Science Foundation of China under Grant Nos.10325521 and 60635040

摘　　要：We propose a scheme for generating squeezed states in solid state circuits which consist a superconducting transmission line resonator （STLR）, a superconducting Cooper-pair box （CPB） and a nanoelectromechanical resonator （NMR）. The nonlinear interaction between the STLR and the CPB can be implemented by setting the external biased flux of the CPB at some certain points. The interaction Hamiltonian between the STLR and the NMR is derived by performing Fr ohlich transformation on tile total Hamiltonian of tile combined system. Just by adiabatically keeping the CPB at the ground state, we get the standard parametric down-conversion Hamiltonian, and the squeezed states of the STLR can be easily generated, which is similar to the three-wave mixing in quantum optics.

关 键 词：squeezed state solid-State circuit superconducting transmission line 

分 类 号：O48[理学—固体物理]