用于实现安全Dirac费米子输运的石墨烯纳米褶皱波导
Nanowrinkle Waveguide in Graphene for Enabling Secure Dirac Fermion Transport
AI总结：
本研究提出通过单层石墨烯纳米褶皱交替排列赝磁场构建一维导电通道，实现无泄漏的弹道Dirac费米子输运，为长距离安全量子信息传输和应变工程控制提供了新方法。
摘要：
石墨烯中的局域态因其在量子信息科学中的潜在应用而备受关注。尽管与其他半导体相比，石墨烯具有优异的输运和电子特性，但由于其无带隙的属性，实现纳米尺度的局域化仍具挑战。在本研究中，我们探索了单层石墨烯中沿纳米褶皱的独特输运特性。我们展示了通过沿纳米褶皱交替排列赝磁场来创建一维导电通道，实现了无泄漏的弹道Dirac费米子输运。这提出了一种长距离安全量子信息传输的可行方法。此外，我们将分析扩展到弯曲纳米褶皱，表明除非弯曲角度足够大，Dirac费米子都能被良好引导传播。我们对石墨烯中纳米褶皱波导的展示，引入了一种通过应变工程控制Dirac费米子输运的新方法，以应用于量子信息技术。
英文摘要：
Localized states in graphene have garnered significant attention in quantum information science due to their potential applications. Despite graphene's superior transport and electronic properties compared to other semiconductors, achieving nanoscale confinement remains challenging due to its gapless nature. In this study, we explore the unique transport properties along nanowrinkles in monolayer graphene. We demonstrate the creation of a one-dimensional conduction channel by alternating pseudo-magnetic fields along the nanowrinkle, enabling ballistic Dirac fermion transport without leakage. This suggests a feasible method for secure quantum information transfer over long distances. Furthermore, we extend our analysis to bent nanowrinkles, showcasing well-guided Dirac fermion propagation unless the bent angle is sufficiently large. Our demonstration of the nanowrinkle waveguide in graphene introduces a novel approach to controlling Dirac fermion transport through strain engineering, for quantum information technology applications.
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