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Quantum State Transfer between Two Distant Atoms by Connecting Two Cavities via Optical Fibres |
| OU Yong-Cheng1;YUAN Chun-Hua1;ZHANG Zhi-Ming1,2 |
| 1Department of Physics, Shanghai Jiao Tong University, Shanghai 200240
2Institute of Information and Optoelectronics, South China Normal University, Guangzhou 510631 |
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| Cite this article: |
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OU Yong-Cheng, YUAN Chun-Hua, ZHANG Zhi-Ming 2005 Chin. Phys. Lett. 22 3001-3004 |
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Abstract A scheme is proposed to unconditionally implement state transfer between two distant atoms by sending the atoms across two distant cavities connected via an optical fibre, respectively. The field state, which preserves the information about the first atom, is transmitted from one cavity to the other along the fibre. A Faraday rotator integrated in the fibre can be designed to completely stop the fields reflected from the second cavity, thus after the field interacts with the second atom for a defined time, the state transfer can be accomplished with unit efficiency.
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| Keywords:
03.67.-a
03.67.Mn
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Published: 01 December 2005
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| PACS: |
03.67.-a
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(Quantum information)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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