二维石墨烯晶格中的非经典相关性

IF 2.4 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Communications in Theoretical Physics Pub Date : 2024-04-11 DOI:10.1088/1572-9494/ad2d51

Hao Wang

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引用次数: 0

摘要

我们通过二维石墨烯晶格的消极性、局域量子不确定性（LQU）和局域量子费雪信息（LQFI）研究了非经典相关性。给出了消极性、LQU 和 LQFI 的明确分析表达式。LQU 和 LQFI 的近似形式证实了量子费雪信息和偏斜信息之间的不等式，其中 LQFI 总是大于或等于 LQU，并且两者在不同振幅下表现出非常相似的行为。此外，还分析了不同系统参数对量化量子相关性的影响。在二维石墨烯晶格系统中，LQFI 比 LQU 揭示了更多的非经典相关性。

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Nonclassical correlations in two-dimensional graphene lattices

We investigate nonclassical correlations via negativity, local quantum uncertainty (LQU) and local quantum Fisher information (LQFI) for two-dimensional graphene lattices. The explicitly analytical expressions for negativity, LQU and LQFI are given. The close forms of LQU and LQFI confirm the inequality between the quantum Fisher information and skew information, where the LQFI is always greater than or equal to the LQU, and both show very similar behavior with different amplitudes. Moreover, the effects of the different system parameters on the quantified quantum correlation are analyzed. The LQFI reveals more nonclassical correlations than LQU in a two-dimensional graphene lattice system.

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来源期刊

Communications in Theoretical Physics 物理-物理：综合

CiteScore

5.20

自引率

3.20%

发文量

6110

审稿时长

4.2 months

期刊介绍： Communications in Theoretical Physics is devoted to reporting important new developments in the area of theoretical physics. Papers cover the fields of: mathematical physics quantum physics and quantum information particle physics and quantum field theory nuclear physics gravitation theory, astrophysics and cosmology atomic, molecular, optics (AMO) and plasma physics, chemical physics statistical physics, soft matter and biophysics condensed matter theory others Certain new interdisciplinary subjects are also incorporated.