Network nonlocality with continuous variables
Since the birth of quantum mechanics, quantum information theory has seen a rise due to the contradiction with classical models. Some new concepts have surged up from the application of quantum models to information theory, such as entanglement and Bell nonlocality. Here we sum up the key concepts o...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/369248 |
| Acceso en línea: | https://hdl.handle.net/2117/369248 |
| Access Level: | acceso abierto |
| Palabra clave: | Photonics Quantum nonlocality causal networks Gaussian states entanglement No localidad cuántica redes causales estados Gaussianos entrelazamiento Fotònica Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica |
| Sumario: | Since the birth of quantum mechanics, quantum information theory has seen a rise due to the contradiction with classical models. Some new concepts have surged up from the application of quantum models to information theory, such as entanglement and Bell nonlocality. Here we sum up the key concepts of these topics, which can be extended to multipartite settings in networks. Later on, we introduce the continuous-variable description of quantum systems of infinite dimension information and its basic formalism. In the end, we prove a theorem stating that Gaussian states (and more in general states with a positive Wigner distribution), which are experimentally easy to reproduce, do not show network nonlocality when measured in phase-space. |
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