Non-Markovian decoherence dynamics of strong-coupling hybrid quantum systems: A master equation approach

Kai Ting Chiang, Wei Min Zhang

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Based on the experiments [S. Putz, Nat. Phys. 10, 720 (2014)1745-247310.1038/nphys3050; Nat. Photonics 11, 36 (2017)1749-488510.1038/nphoton.2016.225] on the hybrid quantum system of a superconducting microwave cavity coupled strongly to an inhomogeneous broadening spin ensemble, we use the exact master equation theory to investigate its non-Markovian decoherence dynamics under external driving fields. In the experiments, the spin ensemble is made of negatively charged nitrogen-vacancy defects in diamond. The exact master equation theory generalizes the fluctuation-dissipation relation and depicts in details the transient non-Markovian decoherence, in which the dissipation (relaxation) and fluctuations (noise or dephasing) dynamics is well described and the non-Markovian memory effect can be well characterized. We study the physical picture of the transient non-Markovian decoherence dynamics and explore how the non-Markovian decoherence induced by the inhomogeneous broadening of the spin ensemble is suppressed in the strong-coupling regime. We also show how the spectral hole burning generates localized bound states for the further decoherence suppression. Furthermore, we investigate the two-time correlations to show the relationships between quantum fluctuations and quantum memory.

原文English
文章編號013714
期刊Physical Review A
103
發行號1
DOIs
出版狀態Published - 2021 一月 11

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學

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