Bipartite entanglement in fermion systems

We discuss the relation between fermion entanglement and bipartite entanglement. We first show that an exact correspondence between them arises when the states are constrained to have a definite local number parity. Moreover, for arbitrary states in a four dimensional single-particle Hilbert space,...

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Autores principales: Gigena, Nicolás Alejandro, Rossignoli, Raúl Dante
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Físicas
quantum entanglement
fermion systems
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/76517
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-76517
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Físicas
quantum entanglement
fermion systems
spellingShingle Ciencias Físicas
quantum entanglement
fermion systems
Gigena, Nicolás Alejandro
Rossignoli, Raúl Dante
Bipartite entanglement in fermion systems
topic_facet Ciencias Físicas
quantum entanglement
fermion systems
description We discuss the relation between fermion entanglement and bipartite entanglement. We first show that an exact correspondence between them arises when the states are constrained to have a definite local number parity. Moreover, for arbitrary states in a four dimensional single-particle Hilbert space, the fermion entanglement is shown to measure the entanglement between two distinguishable qubits defined by a suitable partition of this space. Such entanglement can be used as a resource for tasks like quantum teleportation. On the other hand, this fermionic entanglement provides a lower bound to the entanglement of an arbitrary bipartition although in this case the local states involved will generally have different number parities. Finally the fermionic implementation of the teleportation and superdense coding protocols based on qubits with odd and even number parity is discussed, together with the role of the previous types of entanglement.
format Articulo
Articulo
author Gigena, Nicolás Alejandro
Rossignoli, Raúl Dante
author_facet Gigena, Nicolás Alejandro
Rossignoli, Raúl Dante
author_sort Gigena, Nicolás Alejandro
title Bipartite entanglement in fermion systems
title_short Bipartite entanglement in fermion systems
title_full Bipartite entanglement in fermion systems
title_fullStr Bipartite entanglement in fermion systems
title_full_unstemmed Bipartite entanglement in fermion systems
title_sort bipartite entanglement in fermion systems
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/76517
work_keys_str_mv AT gigenanicolasalejandro bipartiteentanglementinfermionsystems
AT rossignolirauldante bipartiteentanglementinfermionsystems
bdutipo_str Repositorios
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