监测量子输运：量子霍尔干涉仪的全计数统计

IF 5.1 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Quantum Pub Date : 2025-10-02 DOI:10.22331/q-2025-10-02-1874

C.W.J. Beenakker, Jin-Fu Chen

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引用次数: 0

摘要

我们推广了通过相位相干导体转移的电子电荷的概率分布函数的Levitov-Lesovik公式，以包括监测量子霍尔边缘模式中手性传播的投影测量。当应用于电子Mach-Zehnder干涉仪时，监测降低了Aharonov-Bohm电导振荡的可见性，同时保留了计数统计的二项式形式，从而消除了退相干退相探针模型的一个基本缺点。

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Monitored quantum transport: full counting statistics of a quantum Hall interferometer

We generalize the Levitov-Lesovik formula for the probability distribution function of the electron charge transferred through a phase coherent conductor, to include projective measurements that monitor the chiral propagation in quantum Hall edge modes. When applied to an electronic Mach-Zehnder interferometer, the monitoring reduces the visibility of the Aharonov-Bohm conductance oscillations while preserving the binomial form of the counting statistics, thereby removing a fundamental shortcoming of the dephasing-probe model of decoherence.

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来源期刊

Quantum Physics and Astronomy-Physics and Astronomy (miscellaneous)

CiteScore

9.20

自引率

10.90%

发文量

241

审稿时长

16 weeks

期刊介绍： Quantum is an open-access peer-reviewed journal for quantum science and related fields. Quantum is non-profit and community-run: an effort by researchers and for researchers to make science more open and publishing more transparent and efficient.