Fractional statistics in anyon collisions

被引：266

作者：

Bartolomei, H. ^{[1
]}

Kumar, M. ^{[1
,3
]}

Bisognin, R. ^{[1
]}

Marguerite, A. ^{[1
,4
]}

Berroir, J. -M. ^{[1
]}

Bocquillon, E. ^{[1
]}

Placais, B. ^{[1
]}

Cavanna, A. ^{[2
]}

Dong, Q. ^{[2
]}

Gennser, U. ^{[2
]}

Jin, Y. ^{[2
]}

Feve, G. ^{[1
]}

机构：

[1] Univ Paris, Sorbonne Univ, Univ PSL, Lab Phys,ENS,CNRS, F-75005 Paris, France

[2] Univ Paris Saclay, CNRS, C2N, Palaiseau, France

[3] Aalto Univ, Dept Appl Phys, Low Temp Lab, Espoo, Finland

[4] Weizmann Inst Sci, Dept Condensed Matter Phys, Rehovot, Israel

来源：

SCIENCE | 2020年 / 368卷 / 6487期

基金：

欧洲研究理事会;

关键词：

QUANTUM; INTERFERENCE; ELECTRONS; NOISE; INTERFEROMETER; PARTICLES;

D O I：

10.1126/science.aaz5601

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Two-dimensional systems can host exotic particles called anyons whose quantum statistics are neither bosonic nor fermionic. For example, the elementary excitations of the fractional quantum Hall effect at filling factor nu = 1/m (where m is an odd integer) have been predicted to obey Abelian fractional statistics, with a phase phi associated with the exchange of two particles equal to pi/m. However, despite numerous experimental attempts, clear signatures of fractional statistics have remained elusive. We experimentally demonstrate Abelian fractional statistics at filling factor nu = 1/3 by measuring the current correlations resulting from the collision between anyons at a beamsplitter. By analyzing their dependence on the anyon current impinging on the splitter and comparing with recent theoretical models, we extract phi = pi/3, in agreement with predictions.

引用

页码：173 / +

页数：27

共 41 条

[1] FRACTIONAL STATISTICS AND THE QUANTUM HALL-EFFECT [J].