Of Local Operations and Physical Wires
In this work (multipartite) entanglement, discord, and coherence are unified as different aspects of a single underlying resource theory defined through simple and operationally meaningful elemental operations. This is achieved by revisiting the resource theory defining entanglement, local operation...
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| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2018
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/124311 |
| Aporte de: |
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I19-R120-10915-124311 |
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| 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 Quantum physics Quantum information Resource theories Quantum discord |
| spellingShingle |
Ciencias Exactas Física Quantum physics Quantum information Resource theories Quantum discord Egloff, Dario Matera, Juan Mauricio Theurer, Thomas Plenio, Martin B. Of Local Operations and Physical Wires |
| topic_facet |
Ciencias Exactas Física Quantum physics Quantum information Resource theories Quantum discord |
| description |
In this work (multipartite) entanglement, discord, and coherence are unified as different aspects of a single underlying resource theory defined through simple and operationally meaningful elemental operations. This is achieved by revisiting the resource theory defining entanglement, local operations, and classical communication (LOCC), placing the focus on the underlying quantum nature of the communication channels. Taking the natural elemental operations in the resulting generalization of LOCC yields a resource theory that singles out coherence in the wire connecting the spatially separated systems as an operationally useful resource. The approach naturally allows us to consider a reduced setting as well, namely, the one with only the wire connected to a single quantum system, which leads to discordlike resources. The general form of free operations in this latter setting is derived and presented as a closed form. We discuss in what sense the present approach defines a resource theory of quantum discord and in which situations such an interpretation is sound—and why in general discord is not a resource. This unified and operationally meaningful approach makes transparent many features of entanglement that in LOCC might seem surprising, such as the possibility to use a particle to entangle two parties, without it ever being entangled with either of them, or that there exist different forms of multipartite entanglement. |
| format |
Articulo Articulo |
| author |
Egloff, Dario Matera, Juan Mauricio Theurer, Thomas Plenio, Martin B. |
| author_facet |
Egloff, Dario Matera, Juan Mauricio Theurer, Thomas Plenio, Martin B. |
| author_sort |
Egloff, Dario |
| title |
Of Local Operations and Physical Wires |
| title_short |
Of Local Operations and Physical Wires |
| title_full |
Of Local Operations and Physical Wires |
| title_fullStr |
Of Local Operations and Physical Wires |
| title_full_unstemmed |
Of Local Operations and Physical Wires |
| title_sort |
of local operations and physical wires |
| publishDate |
2018 |
| url |
http://sedici.unlp.edu.ar/handle/10915/124311 |
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AT egloffdario oflocaloperationsandphysicalwires AT materajuanmauricio oflocaloperationsandphysicalwires AT theurerthomas oflocaloperationsandphysicalwires AT pleniomartinb oflocaloperationsandphysicalwires |
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Repositorios |
| _version_ |
1764820450094874625 |