Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator

doi:10.1088/1674-1056/ab84d8

中国物理B ›› 2020, Vol. 29 ›› Issue (6): 60304-060304.doi: 10.1088/1674-1056/ab84d8

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator

Qingxia Mu(穆青霞), Peiying Lin(林佩英)

Mathematics and Physics Department, North China Electric Power University, Beijing 102206, China

收稿日期:2020-02-12 修回日期:2020-03-11 出版日期:2020-06-05 发布日期:2020-06-05
通讯作者: Qingxia Mu E-mail:qingxiamu@ncepu.edu.cn
基金资助:
Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. 2018MS056) and the National Natural Science Foundation of China (Grant Nos. 11605055 and 11974108).

Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator

Qingxia Mu(穆青霞), Peiying Lin(林佩英)

Mathematics and Physics Department, North China Electric Power University, Beijing 102206, China

Received:2020-02-12 Revised:2020-03-11 Online:2020-06-05 Published:2020-06-05
Contact: Qingxia Mu E-mail:qingxiamu@ncepu.edu.cn
Supported by:
Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. 2018MS056) and the National Natural Science Foundation of China (Grant Nos. 11605055 and 11974108).

摘要/Abstract

摘要： We investigate the non-Markovian effects on the entanglement transfer to the distant non-interacting atom qubits, which are embedded in a coupled superconducting resonator. The master equation governing the dynamics of the system is derived by the non-Markovian quantum state diffusion (NMQSD) method. Based on the solution, we show that the memory effect of the environment can lead to higher entanglement revival and make the entanglement last for a longer time. That is to say, the non-Markovian environment can enhance the entanglement transfer. It is also found that the maximum entanglement transferred to distant atoms can be modified by appropriately selecting the frequency of the modulated inter-cavity coupling. Moreover, with the initial anti-correlated state, the entanglement between the cavity fields can be almost completely transferred to the separated atoms. Lastly, we show that the memory effect has a significant impact on the generation of entanglement from the initial non-entangled states.

关键词: non-Markovian, entanglement transfer, quantum state diffusion

Abstract: We investigate the non-Markovian effects on the entanglement transfer to the distant non-interacting atom qubits, which are embedded in a coupled superconducting resonator. The master equation governing the dynamics of the system is derived by the non-Markovian quantum state diffusion (NMQSD) method. Based on the solution, we show that the memory effect of the environment can lead to higher entanglement revival and make the entanglement last for a longer time. That is to say, the non-Markovian environment can enhance the entanglement transfer. It is also found that the maximum entanglement transferred to distant atoms can be modified by appropriately selecting the frequency of the modulated inter-cavity coupling. Moreover, with the initial anti-correlated state, the entanglement between the cavity fields can be almost completely transferred to the separated atoms. Lastly, we show that the memory effect has a significant impact on the generation of entanglement from the initial non-entangled states.

Key words: non-Markovian, entanglement transfer, quantum state diffusion

中图分类号: (Quantum error correction and other methods for protection against decoherence)

03.67.Pp

03.65.Yz (Decoherence; open systems; quantum statistical methods)

穆青霞, 林佩英. Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator[J]. 中国物理B, 2020, 29(6): 60304-060304.

Qingxia Mu(穆青霞), Peiying Lin(林佩英). Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator[J]. Chin. Phys. B, 2020, 29(6): 60304-060304.

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Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator

Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator

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