The effects of thermal photons on entanglement dynamics for a dispersive Jaynes-Cummings model

被引:37
作者
Obada, A. -S. F. [2 ]
Hessian, H. A. [1 ]
Mohamed, A. -B. A. [1 ]
机构
[1] Assiut Univ, Fac Sci, Assiut, Egypt
[2] Al Azhar Univ, Fac Sci, Cairo, Egypt
关键词
D O I
10.1016/j.physleta.2008.02.046
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Using the master equation, we give a fully analytical description of the dynamics of an atom dispersively coupled to a field mode in a dissipative cavity. The effects of thermal photons ((n) over bar = 0) on entanglement and coherence loss are investigated. It is found that the field is inhibited from going into a pure state and coherence is lost faster than in the case of zero temperature ((n) over bar = 0). (c) 2008 Published by Elsevier B.V.
引用
收藏
页码:3699 / 3706
页数:8
相关论文
共 34 条
[21]   A treatment of the quantum partial entropies in the atom-field interaction with a class of Schrodinger cat states [J].
Obada, ASF ;
Hessian, HA ;
Abdel-Aty, M .
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2005, 3 (03) :591-602
[22]   Entanglement generation and entropy growth due to intrinsic decoherence in the Jaynes-Cummings model [J].
Obada, ASF ;
Hessian, HA .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2004, 21 (08) :1535-1542
[23]   Influence of superposition of coherent states of light on the evolution of the field entropy and entanglement in the intensity-dependent JCM (vol 28, pg 1097, 2002) [J].
Obada, ASF ;
Hessian, HA .
MODERN PHYSICS LETTERS B, 2003, 17 (29-30) :1553-1554
[24]   Influence of superposition of coherent states of light on the evolution of the field entropy and entanglement in the intensity-dependent JCM [J].
Obada, ASF ;
Hessian, HA .
MODERN PHYSICS LETTERS B, 2002, 16 (28-29) :1097-1106
[25]  
PEIXOTO JG, 1999, PHYS REV A, V59, P3918
[26]   ESTABLISHMENT OF AN ENTANGLED ATOM-FIELD STATE IN THE JAYNES-CUMMINGS MODEL [J].
PHOENIX, SJD ;
KNIGHT, PL .
PHYSICAL REVIEW A, 1991, 44 (09) :6023-6029
[27]   COLLAPSE AND REVIVAL OF THE STATE-VECTOR IN THE JAYNES-CUMMINGS MODEL - AN EXAMPLE OF STATE PREPARATION BY A QUANTUM APPARATUS - COMMENT [J].
PHOENIX, SJD ;
KNIGHT, PL .
PHYSICAL REVIEW LETTERS, 1991, 66 (21) :2833-2833
[28]   FLUCTUATIONS AND ENTROPY IN MODELS OF QUANTUM OPTICAL RESONANCE [J].
PHOENIX, SJD ;
KNIGHT, PL .
ANNALS OF PHYSICS, 1988, 186 (02) :381-407
[29]   Entanglement, fidelity and quantum chaos in cavity QED [J].
Prants, S. V. .
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION, 2007, 12 (01) :19-30
[30]   EFFECTS OF FINITE TEMPERATURE ON 2-PHOTON TRANSITIONS IN A RYDBERG ATOM IN A HIGH-Q CAVITY [J].
PURI, RR ;
JOSHI, A .
OPTICS COMMUNICATIONS, 1989, 69 (5-6) :367-373