Controllable cross-Kerr interaction between microwave photons in circuit quantum electrodynamics

被引：0
作者：
吴琴琴 [1 ,2 ]
廖洁桥 [1 ]
匡乐满 [1 ]
机构：
[1] Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,and Department of Physics,Hunan Normal University
[2] Department of Physics,Hunan Institute of Science and Technology
来源：
Chinese Physics B | 2011年 / 20卷 / 03期
基金：
中国国家自然科学基金;
关键词：
cross-Kerr-like interaction; circuit quantum electrodynamics; macroscopic entangled state;
D O I：
暂无
中图分类号：
O431.2 [量子光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a scheme to enable a controllable cross-Kerr interaction between microwave photons in a circuit quantum electrodynamics(QED) system.In this scheme we use two transmission-line resonators(TLRs) and one superconducting quantum interference device(SQUID) type charge qubit,which acts as an artificial atom.It is shown that in the dispersive regime of the circuit-QED system,a controllable cross-Kerr interaction can be obtained by properly preparing the initial state of the qubit,and a large cross-phase shift between two microwave fields in the two TLRs can then be reached.Based on this cross-Kerr interaction,we show how to create a macroscopic entangled state between the two TLRs.
引用
收藏
页码：231 / 236
页数：6
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