广东工业大学学报 ›› 2008, Vol. 25 ›› Issue (3): 1-5.

• 综合研究 •    下一篇

高Q值腔中有时序差注入的二能级原子的量子信息传递的操纵

  

  1. 广东工业大学实验教学部； 华中科技大学物理学院；
  • 出版日期:2008-07-01 发布日期:2008-07-01
  • 基金资助:

    国家973资助项目(2006CB21606);湖北省自然科学基金资助项目(2007aba095)

Manipulation of Quantum Information Transferring for Two-level Atoms Injected with Different Time Order in High-Q Cavity

  1. 1.Laboratory Teaching Center,Guangdong University of Technology,Guangzhou 510006,China;2.Faculty of Physics,Huazhong University of Science and Technology,Wuhan 430074,China
  • Online:2008-07-01 Published:2008-07-01

HTML

PDF (PC)

2175

摘要： 在高Q值腔中,原子与光场发生强相互作用,腔中的光子、原子作为信息的载体在耦合过程中所携带的信息随时间不断变化,从而实现量子信息的传递.参考Haroche研究小组的原子在超导微腔中的实验,利用J-C模型和包括系统耗散的Master方程,借助于数值计算方法,求解了系统中原子的约化密度矩阵元的微分方程组,并给出了原子基态的密度矩阵元随时间演化的曲线.研究了当原子的注入有时序差时,腔场的损耗对原子基态密度矩阵演化的影响.研究结果表明对两个顺序注入的原子,通过对第2个原子的注入时刻的调控,能够操控第1个原子通过腔场传递给第2个原子的量子信息,从而有效地实现对原子的量子信息传递的操纵. 更多还原

关键词: 腔量子电动力学(CQED)； Master方程； 时序差； 量子信息的传递；

Abstract: The system of two atoms at different injection time coupled with the cavity field is studied.Starting from the J-C Model and Master equation involving the both cavity and atomic dissipations,a set of differential equations for reduced density matrix of atom and field respectively was derived and numerically solved.To obtain the atomic evolutions of lower energy level,the experimental parameters of Haroche’s group in high-Q superconductive microwave cavity were refened to.It is found that the evo...

Key words: cavity quantum electrodynamics(CQED)； Master equation； time order difference； quantum information transferring；

[1] Peixoto de Faria J G,Nemes MC.Dissipative dynamics ofthe Jaynes-Cummings model in the dispersive approxima-tion:Analytical results. Physical Review A Atomic Molecular and Optical Physics . 1999

[2] Doherty AC,Parkins AS,Walls D Fet al.Effects of mo-tion in cavity QED. J Opt B:Quantum Semiclass Opt . 1999 [3] Brune M,Schmidt-Kaler F,Maali Aet al.Quantum RabiOscillation:A direct test of field quantization in a cavity. Physical Review Letters . 1996

[4] Maitre X,Hagley E,Nogues G,et al.QuantumMemory with a Single Photon in a Cavity. Physical Review Letters . 1997 [5] Rauschenbeutel A,Nogues G,Osnaghi S,et al.Coherent operation of a tunable quantum phase gate in cavityQED. Physical Review Letters . 1999

[6] Sleator T,W eingurterH.Realizable universal quantum logic gates. Physical Review Letters . 1995 [7] RAINMOND J M,BRUNE M,HAROCHE S.Colloquium: Manipulating quantum entanglement with atoms and photons in a cavity. Reviews of Modern Physics . 2001

[8] QUANG T,KNIGHT P L,BUZEK V.Quantum collapsesand revivals in an optical cavity. Physical Review A Atomic Molecular and Optical Physics . 1991 [9] GE Guo-qin,LEUNG P T.Atomic evolutions of a single at-om in a high-Q cavity. Chinese Physics Letter . 2001

[10] JIN Guang sheng,LI Shu shen,ZHENG Houzhi.Methodfor generating maximally entangled states of multiple three-level atoms in cavity QED. Physical Review A Atomic Molecular and Optical Physics . 2004

[11] ZHENG Shi-Biao.Quantum-information Processing and Multiatom-entanglement Engineering with a Thermal Cavity. Physical Review A Atomic Molecular and Optical Physics . 2002

[12] Unruh W G.Maintaining coherence in quantum computers. Phys, Rev A . 1995
No related articles found!
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
版权所有 © 2017 《广东工业大学学报》编辑部
地址：广州市东风东路729号广东工业大学 邮编：510090
电话：020-37626653,020-37626139,020-37626396
邮箱：xbzrb@gdut.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发