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

doi:10.1088/1674-1056/ab84d8

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.

Keywords: non-Markovian entanglement transfer quantum state diffusion

Received: 12 February 2020
Revised: 11 March 2020
Accepted manuscript online:

PACS:	03.67.Pp	(Quantum error correction and other methods for protection against decoherence)
	03.65.Yz	(Decoherence; open systems; quantum statistical methods)

Fund: 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).

Corresponding Authors: Qingxia Mu
E-mail: qingxiamu@ncepu.edu.cn

Cite this article:

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

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

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