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IF 2 3区物理与天体物理 Q3 OPTICS

Applied Physics B Pub Date : 2024-12-18 DOI:10.1007/s00340-024-08368-w

Chaimae Banouni, Zakaria Bouafia, Mostafa Mansour, Mohamed Ouchrif

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引用次数: 0

摘要

了解二维电子气体（2DEG）系统对于全面掌握其量子潜力至关重要。由于电子具有自旋，二维电子气体系统为量子信息处理中的量子比特提供了一个可扩展的实用平台。本文研究了局部电子之间的距离和电子密度如何影响量子记忆辅助熵不确定性关系（\(\mathcal {QMA-EUR}\）的动态行为以及二维电子元件系统中的非经典相关性。几何量子度量，如布雷斯距离纠缠（\(\mathcal {B}\），测量的是两个脱域电子的自旋之间的纠缠，而痕量距离不和谐（\(\mathcal {TDD}\）评估的是二维电子元件系统中的量子相关性。研究结果表明，二维电子元件中的电子密度对于保持量子相关性和降低痕量距离不和至关重要。此外，研究结果表明，电子分离对这些系统中的纠缠和非经典相关性有不利影响。研究表明，\(\mathcal {QMA-EUR}\)与二维电子元件中电子自旋的量子相关性成反比。此外，通过调整电子密度，量子相关性可以在电子分离的情况下得到加强，最终降低（\(\mathcal {QMA-EUR}）。这些见解为在量子信息处理中利用二维电子元件系统开辟了迷人的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Unveiling geometric quantum resources and uncertainty relation in a two-dimensional electron gas

Understanding two-dimensional electron gas (2DEG) systems is crucial for a comprehensive grasp of their quantum potential. Due to the spins of electrons, 2DEG systems present a scalable and practical platform for housing qubits in quantum information processing. This paper investigates how the distance between delocalized electrons and electron density influences the dynamic behavior of the quantum-memory-assisted entropic uncertainty relation (\(\mathcal {QMA-EUR}\)) and non-classical correlations in 2DEG systems. Geometric quantum metrics, such as Bures distance entanglement (\(\mathcal {B}\)), measure the entanglement between the spins of two delocalized electrons, while trace distance discord (\(\mathcal {TDD}\)) assesses quantum correlations in 2DEG systems. The results indicate that electron density in 2DEGs is crucial for preserving quantum correlations and reducing \(\mathcal {QMA-EUR}\). Moreover, the findings suggest that electron separations have a detrimental effect on entanglement and non-classical correlations in these systems. It is demonstrated that \(\mathcal {QMA-EUR}\) behaves inversely to quantum correlations of electron spins in 2DEGs. Additionally, by adjusting electron density thoughtfully, quantum correlations can be strengthened against electron separation, ultimately reducing \(\mathcal {QMA-EUR}\). These insights open up fascinating prospects for harnessing 2DEG systems in quantum information processing.

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来源期刊

Applied Physics B 物理-光学

CiteScore

4.00

自引率

4.80%

发文量

202

审稿时长

3.0 months

期刊介绍： Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.