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Combined Effect of Classical Chaos and Quantum Resonance on Entanglement Dynamics |
| Jin-Tao Tan1, Yun-Rong Luo1, Zheng Zhou2, Wen-Hua Hai1** |
1Department of Physics and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha 410081
2Department of Physics and Mathematics, Hunan Institute of Technology, Hengyang 421002
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| Cite this article: |
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Jin-Tao Tan, Yun-Rong Luo, Zheng Zhou et al 2016 Chin. Phys. Lett. 33 070302 |
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Abstract We use linear entropy of an exact quantum state to study the entanglement between internal electronic states and external motional states for a two-level atom held in an amplitude-modulated and tilted optical lattice. Starting from an unentangled initial state associated with the regular 'island' of classical phase space, it is demonstrated that the quantum resonance leads to entanglement generation, the chaotic parameter region results in the increase of the generation speed, and the symmetries of the initial probability distribution determine the final degree of entanglement. The entangled initial states are associated with the classical 'chaotic sea', which do not affect the final entanglement degree for the same initial symmetry. The results may be useful in engineering quantum dynamics for quantum information processing.
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Received: 18 April 2016
Published: 01 August 2016
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| PACS: |
03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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05.45.Ac
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(Low-dimensional chaos)
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03.65.Vf
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(Phases: geometric; dynamic or topological)
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