Entropy squeezing for a two-level atom |
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| Authors: | Mao-Fa Fang Peng Zhou S Swain |
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| Affiliation: | 1. Department of Physics , Hunan Normal University , Changsha, Hunan, 410081, China;2. Department of Applied Mathematics and Theoretical Physics , The Queen's University of Belfast , Belfast, BT7 1NN, UK;3. Anhui Institute of Optics and Fine Mechanics , Academia Sinica, Hefei, 230031, China;4. Department of Applied Mathematics and Theoretical Physics , The Queen's University of Belfast , Belfast, BT7 1NN, UK |
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| Abstract: | Abstract The usual definition of squeezing, based on the Heisenberg uncertainty principle, measures uncertainty in terms of the standard deviation. It can run into difficulties when applied to squeezing in the two-level atom. An alternative definition of squeezing is presented for this system, based on information entropy theory, which overcomes the disadvantages of the definition based on the Heisenberg uncertainty relation. The utility of this definition is illustrated by examining squeezing in the information entropy of a two-level atom in the Jaynes-Cummings model, and in resonance fluorescence. |
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