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Dynamic Polariton and Quantum State Swapping Between an Electromagnetic Field and Atomic Ensemble |
| WANG Kai-Ge;YANG Guo-Jian |
| Department of Physics, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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WANG Kai-Ge, YANG Guo-Jian 2002 Chin. Phys. Lett. 19 1801-1804 |
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Abstract We analyse a dynamical swapping of the quantum state in coupled harmonic oscillators. The result can be applied to the interaction of a single-mode field with atomic ensemble in the weak field case. Similar to the case of electromagnetic induced transparency (EIT), a dynamic polariton is formed. Therefore, the quantum state of the field can be completely mapped on to the atomic medium and vice versa. Using this dynamical swapping and the adiabatic transfer in the EIT between the field and atomic ensemble, we propose a scheme in which both the quantum and the coherent information can be transferred from one field to another.
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42.50.Gy
03.67.-a
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Published: 01 December 2002
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| PACS: |
42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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03.67.-a
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(Quantum information)
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