Quantum Swap Gate with Molecular Ensembles via Cavity Quantum Electrodynamics  

作　　者：刘彦升 梁林梅 

机构地区：[1]Department of Physics, National University of Defense Technology, Changsha 410073

出　　处：《Chinese Physics Letters》2009年第10期28-31,共4页中国物理快报（英文版）

摘　　要：We present a simple method to realize a swap gate at one step with two molecular ensembles in a stripline cavity. In this scheme, we can benefit from the enhancement of the coherent coupling and acquire a long coherent time with encoding qubits in different spin states of the rotational ground state in the molecular ensembles. As a by-product, a scheme to create an entangled state with one excitation stored in two ensembles is proposed.We present a simple method to realize a swap gate at one step with two molecular ensembles in a stripline cavity. In this scheme, we can benefit from the enhancement of the coherent coupling and acquire a long coherent time with encoding qubits in different spin states of the rotational ground state in the molecular ensembles. As a by-product, a scheme to create an entangled state with one excitation stored in two ensembles is proposed.

关 键 词：Computational physics Optics quantum optics and lasers Quantum information and quantum mechanics 

分 类 号：O413.2[理学—理论物理] O561.3[理学—物理]