Regulation of Optimal Entropy Squeezing Sudden Generation for a Moving Atomic Qubit Interacting with the Coherent Fields via Two-Photon Process
| Autor: | Zhao-Hui Peng, Chun-Xia Jia, Bingju Zhou, Xiaojuan Liu |
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| Rok vydání: | 2019 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics General Mathematics Quantum noise Quantum Physics Quantum entanglement 01 natural sciences Sudden death Two-photon excitation microscopy Quantum mechanics Qubit 0103 physical sciences Physics::Atomic and Molecular Clusters Coherent states Physics::Atomic Physics Quantum information 010306 general physics Entropy (arrow of time) |
| Zdroj: | International Journal of Theoretical Physics. 58:1117-1127 |
| ISSN: | 1572-9575 0020-7748 |
| DOI: | 10.1007/s10773-019-04003-z |
| Popis: | From the quantum information point of view, we investigate the regulation of optimal entropy squeezing sudden generation (OESSG) and disappearance (OESSD) for a moving atomic qubit interacting with the coherent field via two-photon process. It is shown that physical substance of atomic OESSG is entanglement sudden death of the atomic qubit and field, and atomic OESSD corresponds to the transient entanglement resurrection of atomic qubit and field. The duration, number component and stable cycle of the atomic OESSG can be controlled by choosing the initial atomic distribution angle 𝜗 and structure parameter p of the field mode, respectively. We realize the periodic exchange of atomic OESSG of components Sx and Sy, and also propose the exchange preparation scheme of atomic optimal entropy squeezing state. Our proposal may be useful for instantaneous control of quantum noise and retention of maximum coherent states of single atomic qubit in the noisy environment. |
| Databáze: | OpenAIRE |
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