Dynamics of entanglement between two harmonic modes in stable and unstable regimes

The exact dynamics of the entanglement between two harmonic modes generated by an angular momentum coupling is examined. Such system arises when considering a particle in a rotating anisotropic harmonic trap or a charged particle in a fixed harmonic potential in a magnetic field, and exhibits a rich...

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Detalles Bibliográficos
Autores principales: Rebón, Lorena, Canosa, Norma Beatriz, Rossignoli, Raúl Dante
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Física
entanglement
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/77396
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-77396
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
entanglement
spellingShingle Ciencias Exactas
Física
entanglement
Rebón, Lorena
Canosa, Norma Beatriz
Rossignoli, Raúl Dante
Dynamics of entanglement between two harmonic modes in stable and unstable regimes
topic_facet Ciencias Exactas
Física
entanglement
description The exact dynamics of the entanglement between two harmonic modes generated by an angular momentum coupling is examined. Such system arises when considering a particle in a rotating anisotropic harmonic trap or a charged particle in a fixed harmonic potential in a magnetic field, and exhibits a rich dynamical structure, with stable, unstable and critical regimes according to the values of the rotational frequency or field and trap parameters. Consequently, it is shown that the entanglement generated from an initially separable gaussian state can exhibit quite distinct evolutions, ranging from quasiperiodic behavior in stable sectors to different types of unbounded increase in critical and unstable regions. The latter lead respectively to a logarithmic and linear growth of the entanglement entropy with time. It is also shown that entanglement can be controlled by tuning the frequency, such that it can be increased, kept constant or returned to a vanishing value just with stepwise frequency variations. Exact asymptotic expressions for the entanglement entropy in the different dynamical regimes are provided.
format Articulo
Articulo
author Rebón, Lorena
Canosa, Norma Beatriz
Rossignoli, Raúl Dante
author_facet Rebón, Lorena
Canosa, Norma Beatriz
Rossignoli, Raúl Dante
author_sort Rebón, Lorena
title Dynamics of entanglement between two harmonic modes in stable and unstable regimes
title_short Dynamics of entanglement between two harmonic modes in stable and unstable regimes
title_full Dynamics of entanglement between two harmonic modes in stable and unstable regimes
title_fullStr Dynamics of entanglement between two harmonic modes in stable and unstable regimes
title_full_unstemmed Dynamics of entanglement between two harmonic modes in stable and unstable regimes
title_sort dynamics of entanglement between two harmonic modes in stable and unstable regimes
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/77396
work_keys_str_mv AT rebonlorena dynamicsofentanglementbetweentwoharmonicmodesinstableandunstableregimes
AT canosanormabeatriz dynamicsofentanglementbetweentwoharmonicmodesinstableandunstableregimes
AT rossignolirauldante dynamicsofentanglementbetweentwoharmonicmodesinstableandunstableregimes
bdutipo_str Repositorios
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