Atom–Atom Entanglement in a Nonresonant Two-Photon Tavis–Cummings Model

被引：3
|
作者：
Guslyannikova M.O. [1 ]
Bashkirov E.K. [1 ]
机构：
[1] Korolev Samara National Research University, Samara
来源：
Bulletin of the Russian Academy of Sciences: Physics | 2020年 / 84卷 / 03期
关键词：
741; Light; Optics and Optical Devices - 761 Nanotechnology - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics;
D O I：
10.3103/S1062873820030107
中图分类号：
学科分类号：
摘要：
Abstract: Entanglement between two identical two-level atoms (qubits) that interact nonresonantly with the thermal field of a single-mode ideal resonator via effective degenerate two-photon transitions is studied. Based on an exact solution for the time-dependent density matrix, negativity is calculated as a measure of atom entanglement. The effect detuning between the atomic frequencies and the doubled frequency of the resonator field has on the dynamics of qubit entanglement in cases of separable and entangled initial atomic states is investigated. © 2020, Allerton Press, Inc.
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页码：281 / 283
页数：2
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