Influence of Stark effect on entanglement of two-atom inside a high-Q cavity

Abstract

Abstract:

The entanglement dynamics of two entangled two-level atoms interacting with a coherent light field is investigated by means of the standard of entanglement concurrence. The influences of the coupling coefficient of Stark effect on the entanglement dynamics of the system are discussed. The calculating results show that the time evolution of two-atom entanglement is influenced by the coupling coefficient of Stark effect. The time evolution of two-atom entanglement displays periodic entanglement and disentanglement when the coupling coefficient of Stark effect is much smaller, while the disentanglement will disappear when the coupling coefficient of Stark effect is much larger. That is to say the statement of entanglement can be preserved preferably.

Key words: entanglement dynamics, coherent light field, concurrence, Stark effect

CLC Number:

O431.2

XING Jin-Jing, WANG Zhong-Jie, ZHANG Kan. Influence of Stark effect on entanglement of two-atom inside a high-Q cavity[J]. J4, 2009, 26(3): 313-319.

References

[1] Jaynes E T, Cummings F W. Comparision of quantum and semiclassical radiation theories with application to beam maser [J]. Proc. IEEE., 1963, 51:89.
[2] Zhao J Q, Xia Y J. Statistic properties of thermal radiation field in K-photon Jaynes-Cummings model [J].J. of Quantum Electronics. (量子电子学报), 2005(3), 22:0407-0410 (in Chinese).
[3] Kang Dongpeng, Ren Min, Ma Aiqun, et al. Entropy squeezing of the optical field in k-photon Jaynes-Cummings model [J]. Acta.Phys.Sin. (物理学报), 2008, 57(2):0873-0879(in Chinese).
[4] Tavis M, Cummings F W. Exact Solution for an N-Molecule-Radiation-Field Hamiltonian [J]. Phys Rev, 1968, 170(2): 379-384.
[5] Zuo Zhanchun, Xia Yunjie. The evolution property of three-body entanglement measure in Tavis-Cummings model [J].Acta.Phys.Sin.(物理学报),2003,52(11):2687-2693(in Chinese).
[6] Chan Chuanjia, Xia Yunjie. The entanglement character of two entangled atoms in Tavis-Cummings model [J].Acta.Phys.Sin.(物理学报), 2006,55(4):1585-1590(in Chinese).
[7] Huang Wanxia, Wang Maosheng, Wang Qinmou. Time evolution of two-atom entanglement in Tavis-Cummings model [J].J. of Quantum Electronics. (量子电子学报),2007,24(3):0329-0334(in Chinese).
[8] Song Jun, Cao Zhuoliang. Dynamical properties in the system of two identical two-level entangled atoms interacting with coherent state[J].J.At.Mol.Phys.(原子与分子物理学报),2004,21(3):0446-0452(in Chinese).
[9] Zhang Duo, Dong Changying, Liu Guojun. Mean photon number evolution of entangled atoms interacting with coherent state light-filed in T-C model [J].J.At.Mol.Phys.(原子与分子物理学报), 2007,24(4):0843-0848(in Chinese). [10] Jin Xingri, Zhang Yingqiao, Li Yan, et al. Effect to three-body entanglement caused by Stark shifts in Tavis-Cummings model[J].J. of Quantum Electronics. (量子电子学报),2005, 22(5):0722-0725(in Chinese).
[11] Zhou Ling, Song Heshan, Yao Li. Chaos of Atom Population with Stark Shift under with and without Rotating-wave Approximation[J].J. of Quantum Electronics.(量子电子学报),2001,18(6):0503-0507(in Chinese).
[12] Zhang Guiming, Li Yueke, Gao Yunfeng. Effect of the Stark shift on the cavity field spectra of the Jaynes-Cummings model [J].J.At.Mol.Phys.(原子与分子物理学报),2007,24(5):0982-0986(in Chinese).
[13] Zhang Guiming, Li Yueke, Gao Yunfeng. Effect of the Stark shift on Cavity Field Spectra of Nondegenerate Two-Photon Jaynes-Cummings model[J].Acta Optica Sinica.(光学学报),2007,27(3):0555-0558(in Chinese).
[14] Wootters W K. Entanglement of Formation of an Arbitrary State of Two Qubits [J].Phys.Rev.Lett., 1998,80:2245-2248.

[1]	ZHANG Qinwei, CAO Lianzhen∗, LIU Xia, YANG Yang, ZHAO Jiaqiang, LI Yingde. Entanglement degradation of photon entangled states in non-Kolmogorov atmospheric turbulence [J]. Chinese Journal of Quantum Electronics, 2021, 38(4): 496-503.
[2]	SONG Lingling，LI Yan*. Entanglement sudden death of decohered hybrid entangled system [J]. Chinese Journal of Quantum Electronics, 2017, 34(5): 608-615.
[3]	JIANG Shengshan，FENG Lingjuan，XIA Yunjie. Entanglement evolution in non-degenerate two photons Tavis-Cummings model [J]. J4, 2016, 33(6): 729-736.
[4]	GAO Deying, Wang Fujun. Quantum Correlation Dynamics of Motive Atoms in Tavis-Cummings Model [J]. J4, 2016, 33(2): 208-214.
[5]	Wang Hai-Feng, Zhang Ying-Jie. Entanglement Evolution and Transfer in Landau-Zener Model [J]. J4, 2015, 32(6): 691-698.
[6]	Du Shao-jiang， Xia Yun-jie2. Characteristics of entanglement dynamics in linear and nonlinear cavity [J]. J4, 2013, 30(6): 710-715.
[7]	HU Yan, YU Yan-xia, JI Ying-hua . Robustness investigation on geometric quantum discord of coupled qubits initially in maximally entangled mixed states [J]. J4, 2013, 30(5): 572-578.
[8]	FENG Bin-bin，ZOU Xiong，JI Ying-hua. Disentanglement of coupled qubits [J]. J4, 2012, 29(6): 701-707.
[9]	HU Yaohua. Influence of Stark shift on entropy and entanglement in J-C model with mixed states [J]. J4, 2012, 29(4): 441-447.
[10]	CHENG Ming, ZHU Shiqun. Entanglement of Heisenberg XY model on inhomogeneous periodic chain [J]. J4, 2012, 29(4): 448-456.
[11]	FAN Zhaoyang，WANG Zhongjie. Influence of laser intensity fluctuations on entanglement of two trapped ions [J]. J4, 2011, 28(5): 577-582.
[12]	JI Ying-Hua, Xu Lin . Entanglement decoherence of coupled superconductor qubits entangled states in non-Markovian environment [J]. J4, 2011, 28(1): 58-64.
[13]	WANG Zhong-Chun, SHEN Fa-Hua, LIU Cheng-Lin. Sudden death and sudden birth of atomic entanglement in double Jaynes-Cummings model composed of two coupled cavities [J]. J4, 2011, 28(1): 65-72.
[14]	XIAO Qingsheng ZHONG Yangwan LIU Yanyong. Entanglement dynamics of two qubits driven by classical laser field [J]. J4, 2010, 27(5): 558-564.
[15]	WANG Zhong-Chun. Effect of the dipole-dipole interaction on entanglement sudden death of atoms in Tavis-Cummings model [J]. J4, 2009, 26(6): 681-688.