Boson–boson pure-dephasing model with non-Markovian properties

Fei Lei Xiong, Li Li, Zeng Bing Chen

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

In this paper, we discuss the mechanism of pure-dephasing process with a newly proposed boson–boson model, namely, a bosonic field coupled to another bosonic bath in thermal equilibrium. Our model is fully solvable and can reproduce the pure-dephasing process which is usually described by the well-known spin–boson model, therefore offering a new perspective to understanding decoherence processes in open quantum systems of high dimension. We also show that this model admits a generically non-Markovian dynamics with respect to various different non-Markovian characterizations, i.e., the criteria based on divisibility, quantum regression formula and Wigner function, respectively. The criterion based on Wigner function is firstly proposed in this paper. For the case that the particle number of the pure-dephasing system is constrained to be 0 or 1, we analytically prove its equivalence to the criteria based on trace distance and divisibility.

原文English
頁(從 - 到)127-135
頁數9
期刊Physics Letters, Section A: General, Atomic and Solid State Physics
383
發行號2-3
DOIs
出版狀態Published - 2019 一月 12

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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