Chinese Physics C > 2007, Vol. 31 > Issue(2): 204-208

Quantum Information Transfer in the Process of Coupled Atoms Interacting with Cavity Fields

School of Technical Physics, Xidian University, Xi'an 710071, China2 Institute of Quantum Optics & Photonics, and Physics Department, Weinan Teachers University, Weinan 714000, China

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Abstract：
A interaction model of multi-photon process in the "multi-coupled-atom-cavity" system is constructed. In terms of the cavity quantum electrodynamics, the properties of quantum information transfer in the process of coupled atoms interacting with cavity fields are studied, and the effect of the coupling between atoms on the quantum information transfer is analyzed. It is found that quantum information can be transferred back and forth or be preserved between the cavity fields and atoms in certain time period. The dipole interaction between atoms leads to the quantum entanglement information partially transferred and partially preserved.

References

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WANG Ju-Xia, YANG Zhi-Yong and AN Yu-Ying. Quantum Information Transfer in the Process of Coupled Atoms Interacting with Cavity Fields[J]. Chinese Physics C, 2007, 31(2): 204-208.

WANG Ju-Xia, YANG Zhi-Yong and AN Yu-Ying. Quantum Information Transfer in the Process of Coupled Atoms Interacting with Cavity Fields[J]. Chinese Physics C, 2007, 31(2): 204-208. shu

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Received: 2006-04-06
Revised: 2006-07-06

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沈阳化工大学材料科学与工程学院沈阳 110142

Quantum Information Transfer in the Process of Coupled Atoms Interacting with Cavity Fields

Corresponding author:WANG Ju-Xia,

School of Technical Physics, Xidian University, Xi'an 710071, China2 Institute of Quantum Optics & Photonics, and Physics Department, Weinan Teachers University, Weinan 714000, China

Received Date:2006-04-06
Accepted Date:2006-07-06
Available Online:2007-02-05

Abstract:A interaction model of multi-photon process in the "multi-coupled-atom-cavity" system is constructed. In terms of the cavity quantum electrodynamics, the properties of quantum information transfer in the process of coupled atoms interacting with cavity fields are studied, and the effect of the coupling between atoms on the quantum information transfer is analyzed. It is found that quantum information can be transferred back and forth or be preserved between the cavity fields and atoms in certain time period. The dipole interaction between atoms leads to the quantum entanglement information partially transferred and partially preserved.