Relevant bibliographies by topics / Entanglement of Gaussian states

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Academic literature on the topic 'Entanglement of Gaussian states'

Author: Grafiati
Published: 22 February 2025

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Dissertations / Theses on the topic "Entanglement of Gaussian states"

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Buono, Daniela. "Quantumness of gaussian and non-gaussian states in the optical domain." Doctoral thesis, Universita degli studi di Salerno, 2013. http://hdl.handle.net/10556/827.

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2011 - 2012<br>The Dissertation Quantumness of Gaussian and non-Gaussian states in the op- tical domain collects my personal both theoretical and experimental contribu- tions, in the context of the Quantum Information theory in continuous variables (cv). In this context, the research focused on the analysis of the quantum prop- erties of bipartite states of electromagnetic radiation. The Dissertation contains, rst, the study of the main possible quantum cor- relations between two modes of the electromagnetic eld. Particular attention has been devoted to the analysis of the di¤erent fo
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Strobel, Helmut [Verfasser], and Markus K. [Akademischer Betreuer] Oberthaler. "Fisher Information and entanglement of non-Gaussian spin states / Helmut Strobel ; Betreuer: Markus K. Oberthaler." Heidelberg : Universitätsbibliothek Heidelberg, 2016. http://d-nb.info/1180610423/34.

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Gagatsos, Christos. "Gaussian deterministic and probabilistic transformations of bosonic quantum fields: squeezing and entanglement generation." Doctoral thesis, Universite Libre de Bruxelles, 2014. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209146.

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The processing of information based on the generation of common quantum optical states (e.g. coherent states) and the measurement of the quadrature components of the light field (e.g. homodyne detection) is often referred to as continuous-variable quantum information processing. It is a very fertile field of investigation, at a crossroads between quantum optics and information theory, with notable successes such as unconditional continuous-variable quantum teleportation or Gaussian quantum key distribution. In quantum optics, the states of the light field are conveniently characterized using a
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Quinn, Niall. "Gaussian non-classical correlations in bipartite dissipative continuous variable quantum systems." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/6915.

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This thesis probes the usefulness of non-classical correlations within imperfect continuous variable decoherent quantum systems. Although a consistent function and practical usefulness of these correlations is largely unknown, it is important to examine their characteristics in more realistic dissipative systems, to gain further insight into any possible advantageous behaviour. A bipartite separable discordant state under the action of controlled loss on one subsystem was considered. Under these conditions the Gaussian quantum discord not only proved to be robust against loss, but actually imp
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Missori, Ricardo José. "Análise e geração de emaranhamento em sistemas de variáveis discreta e continua via átomos." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278170.

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Orientadores: Kyoko Furuya e Marcos César de Oliveira<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-14T10:42:52Z (GMT). No. of bitstreams: 1 Missori_RicardoJose_D.pdf: 12608973 bytes, checksum: 25d2abc254d2688f7a4225e0cd2bc6aa (MD5) Previous issue date: 2009<br>Resumo: Nesta tese, apresentamos dois resultados para a geração de emaranhamento, ambos envolvendo a interação entre átomos e radiação. Na primeira parte, propomos um esquema para geração de estados emaranhados envolvendo os estados eletrônicos de dois
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Menu, Raphaël. "Gaussian-state approaches to quantum spin systems away from equilibrium." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEN036.

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Que se passe-t-il quand un système quantique à N corps est brutalement amené loin de son état d’équilibre ? Vers quelle sorte d’état relaxe-t-il et quelle information peut-on extraire de sa dynamique ? Fournir des réponses à ses questions est un problème difficile qui a suscité l’intérêt de toute une communauté de physiciens. Cependant, le coût numérique important requis pour étudier le comportement de ces systèmes, en particulier pour de grandes tailles, a motivé le développement de méthodes numériques et théoriques de pointes. Cette thèse s’inscrit dans la continuité de ces efforts en propos
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Niset, Julien. "Quantum information with optical continuous variables: nonlocality, entanglement, and error correction." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210459.

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L'objectif de ce travail de recherche est l'étude des posibilités offertes par une nouvelle approche de l'information quantique basée sur des variables quantiques continues. Lorsque ces variables continues sont portées par le champs éléctromagnétique, un grand nombre de protocoles d'information quantique peuvent être implémentés à l'aide de lasers et d'éléments d'optique linéaire standards. Cette simplicité expérimentale rend cette approche très intéressantes d'un point de vue pratique, en particulier pour le développement des futurs réseaux de communications quantiques.<p><p>Le travail peut s
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8

Gondret, Victor. "On the entanglement of quasi-particles in a Bose-Einstein Condensate." Electronic Thesis or Diss., université Paris-Saclay, 2025. http://www.theses.fr/2025UPASP005.

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Ce mémoire de thèse traite de la non-séparabilité de paires de quasi-particules excitées par résonance paramétrique. Le dispositif expérimental utilisé pendant cette thèse permet de produire un condensat de Bose-Einstein d'hélium métastable. L'utilisation d'un gaz d'atomes ultra-froid permet d'atteindre des températures suffisamment basses afin de pouvoir observer des phénomènes intrinsèquement quantiques : la non-séparabilité de l'état. Dans ce travail, nous utilisons le condensat comme un réservoir cohérent permettant de peupler deux modes d'impulsions. L'avantage de l'hélium métastable est
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9

Nocerino, Gaetano. "Gaussian and non-Gaussian resources in Quantum Information." Doctoral thesis, Universita degli studi di Salerno, 2013. http://hdl.handle.net/10556/994.

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2011 - 2012<br>This dissertation was carried out within the framework of the Quantum Information (QI). In particular, I have analyzed the main aspects: the protocol, the quantum states, the conditional measurements, and the decoherence. The protocol. I have studied the teleportation protocol, the entanglement swapping protocol, and the Bell’s inequality (which is the basis of some protocols such as the quantum cryptography). I have dealt with the maximization of the efficiency of each protocol, by acting on the generation of the appropriate quantum states. Starting from the known Squeezed Bel
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De, Fazio Cecilia. "Entanglement Entropy In Excited States." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15833/.

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Negli ultimi anni l’entropia di entaglement è stata ampiamente studiata nel campo dell‘integrabilità. Con l‘introduzione del modello a replica è stato possibile portare alla luce le proprietà universali dell’ entropia di entanglement di un sistema bipartito nello stato di vuoto. In questa tesi si è investigato il problema dell’entropia di entanglement di un sistema bipartito in uno stato eccitato di singola particella. In particolare, si è considerata una teoria bosonica libera in un volume finito, in modo da sfruttare al meglio le tecniche dell‘integrabilità. Nel corso di questa anali
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