Continuous variable entanglement generation in coupled cavities

doi:10.1088/1674-1056/22/1/010307

Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 10307-010307.doi: 10.1088/1674-1056/22/1/010307

Continuous variable entanglement generation in coupled cavities

潘桂侠^{a b}, 肖瑞杰^a, 周玲^a

a School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China;
b School of Science, Anhui University of Science and Technology, Huainan 232001, China

收稿日期:2012-06-11 修回日期:2012-07-16 出版日期:2012-12-01 发布日期:2012-12-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11074028).

Continuous variable entanglement generation in coupled cavities

Pan Gui-Xia (潘桂侠)^{a b}, Xiao Rui-Jie (肖瑞杰)^a, Zhou Ling (周玲)^a

a School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China;
b School of Science, Anhui University of Science and Technology, Huainan 232001, China

Received:2012-06-11 Revised:2012-07-16 Online:2012-12-01 Published:2012-12-01
Contact: Zhou Ling E-mail:Zhlhxn@dlut.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11074028).

摘要/Abstract

摘要： We investigate continuous variable entanglement produced in two distant coupled cavities, in which two four-level atoms are driven by classical fields respectively. Under the large detuning condition, an effective Hamiltonian containing the square of creation (annihilation) operator of cavity field is derived. Due to the nonlinearity, entanglement formally created by the beam splitter type interaction is transformed into the nondegenerate parametric down conversion type. Employing the operator algebraic method, we study the time evolution of entanglement condition, and show that the system provides us advantage in achieving a larger photon number with better entanglement. We also discuss the dissipation of the cavities affecting the entanglement.

关键词: continuous variable entanglement, coupled cavities, nondegenerate parametric down conversion, cavity dissipation

Abstract: We investigate continuous variable entanglement produced in two distant coupled cavities, in which two four-level atoms are driven by classical fields respectively. Under the large detuning condition, an effective Hamiltonian containing the square of creation (annihilation) operator of cavity field is derived. Due to the nonlinearity, entanglement formally created by the beam splitter type interaction is transformed into the nondegenerate parametric down conversion type. Employing the operator algebraic method, we study the time evolution of entanglement condition, and show that the system provides us advantage in achieving a larger photon number with better entanglement. We also discuss the dissipation of the cavities affecting the entanglement.

Key words: continuous variable entanglement, coupled cavities, nondegenerate parametric down conversion, cavity dissipation

中图分类号: (Entanglement measures, witnesses, and other characterizations)

03.67.Mn

42.50.Dv (Quantum state engineering and measurements)

潘桂侠, 肖瑞杰, 周玲. Continuous variable entanglement generation in coupled cavities[J]. Chin. Phys. B, 2013, 22(1): 10307-010307.

Pan Gui-Xia (潘桂侠), Xiao Rui-Jie (肖瑞杰), Zhou Ling (周玲). Continuous variable entanglement generation in coupled cavities[J]. Chin. Phys. B, 2013, 22(1): 10307-010307.

参考文献 41

[1]	Bennett C H, Brassard G, Crépeau C, Jozsa R, Peres A and Wooters W K 1993 Phys. Rev. Lett. 70 1895
[2]	Bennett C H and Wiesner S J 1992 Phys. Rev. Lett. 69 2881
[3]	Davidovich L, Brune M, Raimond J M and Haroche S 1996 Phys. Rev. A 53 1295
[4]	Zheng, S B and Guo G C 2000 Phys. Rev. Lett. 85 2392
[5]	Wang B and Duan L M 2005 Phys. Rev. A 72 022320
[6]	He G, Zhu J and Zeng G 2006 Phys. Rev. A 73 012314
[7]	Zhou L, Xiong H and Zubairy M S 2006 Phys. Rev. A 74 022321
[8]	Zhang Y J, Ren T Q and Xia Y J 2008 Chin. Phys. 17 1972
[9]	Zheng S B 2008 Chin. Phys. 17 2143
[10]	Zhou L, Mu Q X and Liu Z J 2009 Phys. Lett. A 373 2017
[11]	Mu Q X, Ma Y H and Zhou L 2010 Phys. Rev. A 81 024301
[12]	Li X Y, Pan Q, Jing J, Zhang J, Xie C and Peng K 2002 Phys. Rev. Lett. 88 047904
[13]	Zhang J, Xie C, Peng K and Loock P V 2008 Phys. Rev. A 77 022316
[14]	Loock P V and Braunstein S 2001 Phys. Rev. Lett. 87 247901
[15]	Yonezawa H, Aokl T and Furusawa A 2004 Nature 431 430
[16]	Ma Y H, Zhao X Y and Zhou L 2009 Phys. Lett. A 373 2025
[17]	Tan H T, Zhu S Y and Zubairy M S 2005 Phys. Rev. A 72 022305
[18]	Adamyan H H and Kryuchkyan G Y 2004 Phys. Rev. A 69 053814
[19]	Xiong H, Scully M O and Zubairy M S 2005 Phys. Rev. Lett. 94 023601
[20]	Jing J, Zhang J, Yan Y, Zhao F, Xie C and Peng K 2003 Phys. Rev. Lett. 90 167903
[21]	Tan H T and Li G X 2011 Phys. Rev. A 84 024301
[22]	Ikram M, Li G X and Zubairy M S 2007 Phys. Rev. A 76 042317
[23]	Zhou L and Xiong H 2008 J. Phys. B: At. Mol. Opt. Phys. 41 025501
[24]	Li G X, Wu S P and Huang G M 2005 Phys. Rev. A 71 063817
[25]	Li G X, Yang Y P, Allaart K and Lenstra D 2004 Phys. Rev. A 69 014301
[26]	Agarwal G S 1986 Phys. Rev. Lett. 57 827
[27]	Slusher R E, Hollberg L W, Yurke B, Mertz J C and Valley J F 1985 Phys. Rev. Lett. 55 2409
[28]	Ou Z Y, Pereira S F, Kimble H J and Peng K C 1992 Phys. Rev. Lett. 68 3663
[29]	Simon C and Bouwmeester D 2003 Phys. Rev. Lett. 91 053601
[30]	Zhang Y, Wang H, Li X, Jing J, Xie C and Peng K 2000 Phys. Rev. A 62 023813
[31]	Zheng S B, Yang Z B and Xia Y 2010 Phys. Rev. A 81 015804
[32]	Shen L T, Chen X Y, Yang Z B, Wu H Z and Zheng S B 2011 Phys. Rev. A 84 064302
[33]	Song J, Sun X D, Xia Y and Song H S 2011 Phys. Rev. A 83 052309
[34]	Yang Z B, Xia Y and Zheng S B 2010 Opt. Commun. 283 3052
[35]	Yan W B, Liu Z J and Zhou L 2011 Opt. Commun. 284 2250
[36]	Tan H T, Zhang W M and Li G X 2011 Phys. Rev. A 83 062310
[37]	Mckeever J, Boca A, Boozer A D, Buck J R and Kimble H J 2003 Nature 425 268
[38]	Cho J, Angelakis D G and Bose S 2008 Phys. Rev. A 78 022323
[39]	Lu H X, Yang J, Zhang Y D and Chen Z B 2003 Phys. Rev. A 67 024101
[40]	Duan L M, Giedke G, Cirac J I and Zoller P 2000 Phys. Rev. Lett. 84 2722
[41]	Mu Q X, Ma Y H, Zhou L 2009 J. Phys. A 42 225304

Continuous variable entanglement generation in coupled cavities

Continuous variable entanglement generation in coupled cavities

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 41

相关文章 3

Metrics

本文评价

推荐阅读 0

[1]	吴琴, 张智明. Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium[J]. 中国物理B, 2014, 23(3): 34203-034203.
[2]	彭俊, 邬云文, 李小娟. Quantum dynamic behaviour in a coupled cavities system[J]. 中国物理B, 2012, 21(6): 60302-060302.
[3]	王海军, 高云峰. Effect of cavity dissipation on the emission spectrum of an atom interacting with a field in the dispersive approximation[J]. 中国物理B, 2010, 19(1): 14209-014209.