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Nonlocal coherence harvesting from quantum vacuum

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It is well known that nonlocal coherence reflects nonclassical correlations better than quantum entanglement.Here,we analyze nonlocal coherence harvesting from the quantum vacuum to particle detectors adiabatically interacting with a quantum scalar field in Minkowski spacetime.We find that the harvesting-achievable separation range of nonlocal coherence is larger than that of quantum entanglement.As the energy gap grows sufficiently large,the detectors harvest less quantum coherence,while the detectors could extract more quantum entanglement from the vacuum state.Compared with the linear configuration and the scalene configuration,we should choose the model of equilateral triangle configuration to harvest tripartite coherence from the vacuum.Finally,we find a monogamous relationship,which means that tripartite l1-norm of coherence is essentially bipartite types.

nonlocal coherencequantum vacuummonogamous relationship

Rui-Di Wang、Shu-Min Wu、Xiao-Li Huang

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Department of Physics,Liaoning Normal University,Dalian 116029,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

1220513312075050LJKQZ20222315JYTMS20231051

2024

10.1088/1572-9494/ad4a38

理论物理通讯(英文版)
中国科学院理论物理研究所 中国物理学会

理论物理通讯(英文版)

CSTPCD
影响因子：0.333
ISSN：0253-6102
年,卷(期)：2024.76(7)