Finite-time disentanglement induced by single-mode thermal field |
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Authors: | Han Feng and Xia Yun-Jie |
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Institution: | Department of Physics, Jining University, Qufu 273155, China; College of Physics and Engineering, Qufu Normal University, Qufu 273165, China |
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Abstract: | In this paper, we study the entanglement dynamics of atoms
locally coupled to a cavity field. By studying two different models
within the framework of cavity QED, we show that the so-called
atomic entanglement sudden death always occurs if initially the
cavity field is in the thermal state, in clear contrast with that in
the vacuum state where the same entanglement decay is in infinite
time. |
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Keywords: | entanglement sudden death thermal fields |
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