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Chinese Physics Letters

Scheme for Implementing an N-Qubit Phase Gate via Selective Atom-Field Interaction with Cavity Quantum Electrodynamics

邵晓强, 金星日, 朱爱东, 张寿, Yeon, Kyu-Hwang

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

为与通过 high-Q 送光洞的原子实现一扇 two-qubit 阶段门的一个计划被选非相同的联合为在原子和洞之间的常数建议。原子自发的排放能被压制大原子的线索保持了 detuning。而且,计划能被概括实现时间不随 qubits 的数字的增加改变的一扇 N-qubit 阶段门和 gating。

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为与通过 high-Q 送光洞的原子实现一扇 two-qubit 阶段门的一个计划被选非相同的联合为在原子和洞之间的常数建议。原子自发的排放能被压制大原子的线索保持了 detuning。而且,计划能被概括实现时间不随 qubits 的数字的增加改变的一扇 N-qubit 阶段门和 gating。
我们为实现建议一个计划量用通过在洞量 electrodynamics 的一个选择原子洞相互作用的二个四水平的原子的控制不的门操作系统。在我们的协议,量信息在二个原子的稳定的地面状态上被编码。在在原子和单个模式的真空洞地之间的相互作用期间,当大原子洞 detuning 有效地压制原子的自发的腐烂,原子自发的排放是可以忽略的。驱散的影响和控制不的门和我们的建议的试验性的可行性也被讨论的忠实和量的相应成功概率上的相互作用时间的偏差。
一个很简单的理论计划被建议仅仅用在梯子类型之间的一个单个反响的相互作用第一实现 two-qubit 和 three-qubit 控制阶段门三水平的原子和单个模式的洞。在介绍协议,量信息在原子的稳定的地面状态上被编码(作为控制 qubits ) 并且零光子并且洞地的一个光子 Fock 状态(作为目标 qubit ) 。在原子自发的排放,洞模式的腐烂,和联合力量的偏差的影响下面, three-qubit 控制阶段门可以有一比较地高保真度。被扩大认识到 N-qubit 控制阶段门也被讨论的控制阶段门和盒子的试验性的可行性。