Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel

doi:10.1088/1674-1056/20/11/110303

中国物理B ›› 2011, Vol. 20 ›› Issue (11): 110303-110303.doi: 10.1088/1674-1056/20/11/110303

Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel

Y. Hassouni¹, A. El Allati², N. Metwally³

(1)Faculté des Sciences, Laboratoire de Physique Théorique URAC 13, Université Mohammed V-Agdal. Av. Ibn Battouta, B.P. 1014, Rabat, Morocco; (2)Faculté des Sciences, Laboratoire de Physique Théorique URAC 13, Université Mohammed V-Agdal. Av. Ibn Battouta, B.P. 1014, Rabat, Morocco; The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy; (3)Mathematics Department, College of Science, University of Bahrain, Sakhir 32038, Bahrain; Mathematics Department, Faculty of Science, South Valley University, Aswan, Egypt

收稿日期:2011-06-16 修回日期:2011-07-15 出版日期:2011-11-15 发布日期:2011-11-15

Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel

A. El Allati^a)b), Y. Hassouni^a), and N. Metwally^c)d)†

^a Faculté des Sciences, Laboratoire de Physique Théorique URAC 13, Université Mohammed V-Agdal. Av. Ibn Battouta, B.P. 1014, Rabat, Morocco; ^b The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy; ^c Mathematics Department, College of Science, University of Bahrain, Sakhir 32038, Bahrain; ^d Mathematics Department, Faculty of Science, South Valley University, Aswan, Egypt

Received:2011-06-16 Revised:2011-07-15 Online:2011-11-15 Published:2011-11-15

摘要/Abstract

摘要： The dynamics of the maximum entangled coherent state traveling through an amplitude damping channel is investigated. For small values of the transmissivity rate, the traveling state is very fragile to this noise channel, which suffers from the phase flip error with high probability. The entanglement decays smoothly for larger values of the transmissivity rate and speedily for smaller values of this rate. As the number of modes increases, the traveling state over this noise channel quickly loses its entanglement. The odd and even states vanish at the same value of field intensity.

关键词: entanglement, quantum communication, decoherence, coherent states

Abstract: The dynamics of the maximum entangled coherent state traveling through an amplitude damping channel is investigated. For small values of the transmissivity rate, the traveling state is very fragile to this noise channel, which suffers from the phase flip error with high probability. The entanglement decays smoothly for larger values of the transmissivity rate and speedily for smaller values of this rate. As the number of modes increases, the traveling state over this noise channel quickly loses its entanglement. The odd and even states vanish at the same value of field intensity.

Key words: entanglement, quantum communication, decoherence, coherent states

中图分类号: (Quantum information)

03.67.-a

03.67.Hk (Quantum communication)

A. El Allati, Y. Hassouni, N. Metwally. Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel[J]. 中国物理B, 2011, 20(11): 110303-110303.

A. El Allati, Y. Hassouni, and N. Metwally . Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel[J]. Chin. Phys. B, 2011, 20(11): 110303-110303.

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Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel

Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel

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