Counting statistics and dephasing transition in an electronic Mach-Zehnder interferometer

被引：20

作者：

Helzel, A. ^{[1
]}

Litvin, L. V. ^{[1
]}

Levkivskyi, I. P. ^{[2
,3
]}

Sukhorukov, E. V. ^{[4
]}

Wegscheider, W. ^{[5
]}

Strunk, C. ^{[1
]}

机构：

[1] Univ Regensburg, Inst Expt & Angew Phys, D-93040 Regensburg, Germany

[2] ETH, Theoret Phys, CH-8093 Zurich, Switzerland

[3] Bogolyubov Inst Theoret Phys, UA-03680 Kiev, Ukraine

[4] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland

[5] ETH, HPF E 7, Lab Festkorperphys, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 24期

基金：

瑞士国家科学基金会;

关键词：

NOISE;

D O I：

10.1103/PhysRevB.91.245419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It was recently suggested that a novel type of phase transition may occur in the visibility of electronic Mach-Zehnder interferometers. Here, we present experimental evidence for the existence of this transition. The transition is induced by strongly non-Gaussian noise that originates from the strong coupling of a quantum point contact to the interferometer. We provide a transparent physical picture of the effect by exploiting a close analogy to the neutrino oscillations of particle physics. In addition, our experiment constitutes a probe of the singularity of the elusive full counting statistics of a quantum point contact.

引用

页数：13

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