Orbital entanglement and electron localization in quantum wires

Aleta, A. (Universidad de Zaragoza) ; Villarrubia-Rojo, H. ; Frustaglia, D. ; Gopar, V.A. (Universidad de Zaragoza)

Resumen: We study the signatures of disorder in the production of orbital electron entanglement in quantum wires. Disordered entanglers suffer the effects of localization of the electron wave function and random fluctuations in entanglement production. This manifests in the statistics of the concurrence, a measure of the produced two-qubit entanglement. We calculate the concurrence distribution as a function of the disorder strength within a random-matrix approach. We also identify significant constraints on the entanglement production as a consequence of the breaking/preservation of time-reversal symmetry. Additionally, our theoretical results are independently supported by simulations of disordered quantum wires based on a tight-binding model.

Idioma: Inglés

DOI: 10.1103/PhysRevB.89.075429

Año: 2014

Publicado en: Physical Review B. Condensed matter and materials physics 89, 7 (2014), 075429 [5 pp]
ISSN: 1098-0121

Factor impacto JCR: 3.736 (2014)

Categ. JCR: PHYSICS, CONDENSED MATTER rank: 14 / 66 = 0.212 (2014) - Q1 - T1

Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2011-29400
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2012-35719-C02

Tipo y forma: Article (Published version)

Área (Departamento): Física Teórica (Departamento de Física Teórica)