Decoherence of anyonic charge in interferometry measurements

被引：17

作者：

Bonderson, Parsa ^{[1
]}

Shtengel, Kirill

Slingerland, J. K.

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

[3] Univ Calif Santa Barbara, Stn Q, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.98.070401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine interferometric measurements of the topological charge of (non-Abelian) anyons. The target's topological charge is measured from its effect on the interference of probe particles sent through the interferometer. We find that superpositions of distinct anyonic charges a and a(') in the target decohere (exponentially in the number of probes particles used) when the probes have nontrivial monodromy with the charges that may be fused with a to give a(').

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