热噪声下具有散射过程的石墨烯层系统中的量子干涉功率与量子相关性的关系

IF 1.4 4区 物理与天体物理 Q3 OPTICS Laser Physics Letters Pub Date : 2023-11-15 DOI:10.1088/1612-202x/ad069f
Zakaria Bouafia, Mostafa Mansour
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引用次数: 0

摘要

目前,尖端量子处理技术正在探索石墨烯层的非凡电子特性,如高迁移率和热导率。我们的研究致力于调查石墨烯层系统内量子资源在散射过程中的行为,特别关注量子干涉力(QIP)和量子相关性,同时考虑热噪声的影响。为了量化这些相关性,我们采用了局部量子不确定性(LQU)和对数负性(LN)等测量方法。我们研究了温度、谷间散射过程强度和其他系统参数等因素如何影响 QIP 和量子相关性。我们的研究结果表明,温度升高会导致石墨烯层内的 QIP 和非经典相关性降低。此外,值得注意的是,QIP 和 LQU 对温度变化的反应相似,而 LN 对这些变化更为敏感。通过优化系统参数(如带参量、文波数算子和散射过程强度),我们可以减轻热噪声的影响,增强基于石墨烯的量子处理的量子优势。
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Quantum interferometric power versus quantum correlations in a graphene layer system with a scattering process under thermal noise
Cutting-edge quantum processing technology is currently exploring the remarkable electronic properties of graphene layers, such as their high mobility and thermal conductivity. Our research is dedicated to investigating the behavior of quantum resources within a graphene layer system with a scattering process, specifically focusing on quantum interferometric power (QIP) and quantum correlations, while taking into account the influence of thermal noise. To quantify these correlations, we employ measures like local quantum uncertainty (LQU) and logarithmic negativity (LN). We examine how factors like temperature, inter-valley scattering processes strength, and other system parameters affect both QIP and quantum correlations. Our results reveal that higher temperatures lead to a reduction in QIP and non-classical correlations within graphene layers. Moreover, it is noteworthy that QIP and LQU respond similarly to changes in temperature, whereas LN is more sensitive to these variations. By optimizing system parameters such as band parameter, wavenumber operators and scattering processes strength, we can mitigate the impact of thermal noise and enhance the quantum advantages of graphene-based quantum processing
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来源期刊
Laser Physics Letters
Laser Physics Letters 物理-仪器仪表
CiteScore
3.30
自引率
11.80%
发文量
174
审稿时长
2.4 months
期刊介绍: Laser Physics Letters encompasses all aspects of laser physics sciences including, inter alia, spectroscopy, quantum electronics, quantum optics, quantum electrodynamics, nonlinear optics, atom optics, quantum computation, quantum information processing and storage, fiber optics and their applications in chemistry, biology, engineering and medicine. The full list of subject areas covered is as follows: -physics of lasers- fibre optics and fibre lasers- quantum optics and quantum information science- ultrafast optics and strong-field physics- nonlinear optics- physics of cold trapped atoms- laser methods in chemistry, biology, medicine and ecology- laser spectroscopy- novel laser materials and lasers- optics of nanomaterials- interaction of laser radiation with matter- laser interaction with solids- photonics
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