Quantum entanglement between the two-mode fields and atomic entropy squeezing in the system of a moving atom interacting with two-mode entangled coherent field |
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| Authors: | Zou Yan and Li Yong-Ping |
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| Affiliation: | Department of Physics, Dezhou University, Dezhou 253023, China Key Biophysics Laboratory in Universities of Shandong, Dezhou 253023, China |
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| Abstract: | This paper investigates the entropy squeezing of a moving two-level
atom interacting with the two-mode entangled coherent field via
two-photon transition by using an entropic uncertainty relation and the
degree of entanglement between the two-mode fields by using quantum
relative entropy. The results obtained from numerical calculation
indicate that the squeezed period, the duration of entropy squeezing
and the maximal squeezing can be controlled by appropriately
choosing the intensity of the light field, the atomic motion and the
field-mode structure. The atomic motion leads to the periodic
recovery of the initial maximal degree of entanglement between the
two-mode fields. Moreover, there exists a corresponding relation
between the time evolution properties of the atomic entropy
squeezing and those of the entanglement between the two-mode fields. |
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| Keywords: | entropy squeezing quantum
relative entropy atomic motion and field-mode structure two-mode
entangled light field |
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