Selective Atom-Cavity Interaction Scheme for Quantum Controlled-NOT Gate Using Four-Level Atoms in Cavity QED System

TANG Shi-Qing; ZHANG Deng-Yu; XIE Li-Jun; ZHAN Xiao-Gui; GAO Feng

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Selective Atom-Cavity Interaction Scheme for Quantum Controlled-NOT Gate Using Four-Level Atoms in Cavity QED System

机译：腔QED系统中使用四能级原子的量子控制-NOT门的选择性原子-腔相互作用方案

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摘要

We propose a scheme for realization a quantum Controlled-NOT gate operation using two four-level atoms through a selective atom-avity interaction in cavity quantum electrodynamics system.In our protocol, the quantum information is encoded on the stable ground states of the two atoms.During the interaction between atoms and single-mode vacuum cavity-field, the atomic spontaneous emission is negligible as the large atom-cavity detuning effectively suppresses the spontaneous decay of the atoms.The influences of the dissipation and the deviation of interaction time on fidelity and corresponding success probability of the quantum Controlled-NOT gate and the experimental feasibility of our proposal are also discussed.

机译：我们提出了一种在腔量子电动力学系统中通过选择性的原子-原子相互作用，利用两个四能级原子实现量子控制-非门操作的方案。在我们的协议中，量子信息被编码在两个原子的稳定基态上在原子与单模真空腔场相互作用期间，原子自发发射可以忽略不计，因为大的原子腔失谐可以有效地抑制原子的自发衰变。耗散和相互作用时间偏差对保真度的影响并讨论了量子可控非门的相应成功概率以及所提出方案的实验可行性。

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来源
《理论物理通讯（英文版）》 |2009年第2期|247-251|共5页
作者
TANG Shi-Qing; ZHANG Deng-Yu; XIE Li-Jun; ZHAN Xiao-Gui; GAO Feng;
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作者单位

Faculty of Material and Photoelectronic Physics, Xiangtan University, Xiangtan 411005, China;

Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008, China;

Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008, China;

Faculty of Material and Photoelectronic Physics, Xiangtan University, Xiangtan 411005, China;

Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008, China;

Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008, China;

Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008, China;

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正文语种 chi
中图分类物理学;
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Selective Atom-Cavity Interaction Scheme for Quantum Controlled-NOT Gate Using Four-Level Atoms in Cavity QED System

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