利用三脚型人工原子的共振激发实现几何相位门  

Geometric phase gates using tripod artificial atoms by resonant transfers

作　　者：胡晓亮[1] 陈翠云[2] 

机构地区：[1]河南科技大学物理系,河南洛阳471003 [2]河南科技大学艺术与设计学院,河南洛阳471003

出　　处：《湖南科技学院学报》2009年第4期50-53,共4页Journal of Hunan University of Science and Engineering

基　　金：国家自然基金(No.10674018);湖南省自然基金(No.06JJ5015);中国博士后基金(No.20070420379)资助项目。

摘　　要：考虑了由SQUID量子电路构成的三脚型四能级人工原子,利用共振激光脉冲获得几何相位门。阐明了量子态几何相位的形成,其变化可由三束激光脉冲波形、相对强度及其相位来控制。同时,基于几何相位,给出了实现单量子比特门、Hadamard门和两量子比特受控非门的方案。We consider tripod artificial atom systems consisting of SQUID＇s circuit, and show how to generate purely geometric phase changes of the quantum states involved. The geometric phases are controlled by three laser fields where pulse shapes, relative field strength, and phases can be controlled. Simultaneity, we present a scheme to implement three quantum gates based on these geometric phases： a one-qubit phase gate, a Hadamard gate, and a two-qubit phase gate.

关 键 词：量子光学 几何相位 人工原子 量子逻辑门 

分 类 号：O431.2[机械工程—光学工程]