Coherent State Control to Recover Quantum Entanglement and Coherence

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ID: 101757
2019
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Abstract
How to analytically deal with the entanglement and coherence dynamics of separated Jaynes−Cummings nodes with continuous-variable fields is still an open question. We here generalize this model to a more common situation including either a small or large qubit-field detuning, and obtain two new analytical formulas. The X-state simplification, Fock-state shortcut and detuning-limit approximation work together in an amazingly accurate way, which agrees with the numerical results. The new formulas almost perfectly predict the two-qubit entanglement dynamics both in sudden death and rebirth phenomenon for detuning interactions. We find that when both the qubit-field detuning and amplitude of coherent states are large enough, the maximal entanglement and coherence peaks can be fully and periodically retrieved, and their revival periods both increase linearly with the increasing detuning.
Reference Key
shen2019coherententropy Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Shen, Li-Tuo;Shi, Zhi-Cheng;Yang, Zhen-Biao;
Journal entropy
Year 2019
DOI
DOI not found
URL
https://www.mdpi.com/1099-4300/21/10/917
Keywords
Medicine Technology (General) Chemical technology Biotechnology Science (General) Mechanical engineering and machinery Science physics environmental engineering earthwork. foundations mathematics electronic computers. computer science astrophysics inorganic chemistry

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