Quantum coherence and quantum Fisher information of Dirac particles in curved spacetime under decoherence
Year: 2024
Type: article
Abstract: Previous studies have shown that the decoherence of environments generally negatively influences the quantum correlations in the Schwarzschild black hole. In our paper, we find that the decoherence of the generalized amplitude damping (GAD) channel has both positive and negative effects on the quantum coherence of Dirac fields, which means that the decoherence of environments can not only reduce the quantum coherence but also increase the quantum coherence in Schwarzschild spacetime. This result banishes the widespread belief that the decoherence of the environment can only destroy the quantum coherence in curved spacetime. Furthermore, another novel phenomenon has been observed for the first time: with increasing Hawking temperature T, the QFI of physically inaccessible modes rapidly decays from infinity to 0, which may provide a way to detect whether the particles enter the physically inaccessible region or not. This result may provide a new perspective for exploring and analyzing black holes.
Source: Physics Letters B
Authors: Chun-yao Liu, Zheng-wen Long, Qi-liang He
Institutions: Guizhou Normal University, Guizhou University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Awards: G713973808, 环境噪音下腔QED的量子关联和量子信息研究
OpenAlex ID: W4402035574