Disorder-Robust Entanglement Transport

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Title
Disorder-Robust Entanglement Transport
Author(s)
Clemens Gneiting; Daniel Leykam; Franco Nori
Publication Date
2019-02
Journal
PHYSICAL REVIEW LETTERS, v.122, no.6, pp.066601 -
Publisher
AMER PHYSICAL SOC
Abstract
We study the disorder-perturbed transport of two noninteracting entangled particles in the absence of backscattering. This situation is, for instance, realized along edges of topological insulators. We find profoundly different responses to disorder-induced dephasing for the center-of-mass and relative coordinates: While a mirror symmetry protects even highly delocalized relative states when resonant with the symmetry condition, delocalizations in the center of mass [e.g., two-particle (N 1⁄4 2) N00N states] remain fully sensitive to disorder. We demonstrate the relevance of these differences to the example of interferometric entanglement detection. Our platform-independent analysis is based on the treatment of disorder-averaged quantum systems with quantum master equations.© 2019 American Physical Society.
URI
https://pr.ibs.re.kr/handle/8788114/5699
ISSN
0031-9007
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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