Resultats globals: 4 registres trobats en 0.02 segons.
Articles, 1 registres trobats
Contribucions a jornades i congressos, 1 registres trobats
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Documents de recerca, 1 registres trobats
Articles 1 registres trobats  
1.
16 p, 581.4 KB Decoupling with random diagonal unitaries / Nakata, Yoshifumi (Universitat Autònoma de Barcelona. Departament de Física) ; Hirche, Christoph (Universitat Autònoma de Barcelona. Departament de Física) ; Morgan, Ciara (Universität Leipzig (1991- ). Institut für Theoretische Physik) ; Winter, Andreas (Universitat Autònoma de Barcelona. Departament de Física)
We investigate decoupling, one of the most important primitives in quantum Shannon theory, by replacing the uniformly distributed random unitaries commonly used to achieve the protocol, with repeated applications of random unitaries diagonal in the Pauli-Z and -X bases. [...]
2017 - 10.22331/q-2017-07-21-18
Quantum, Vol. 1 (2017) , p. 18  

Contribucions a jornades i congressos 1 registres trobats  
1.
7 p, 227.0 KB An aphabet-size bound for the information bottleneck function / Hirche, Christoph (Technical University of Munich. Zentrum Mathematik) ; Winter, Andreas (Universitat Autònoma de Barcelona. Departament de Física)
The information bottleneck function gives a measure of optimal preservation of correlation between some random variable X and some side information Y while compressing X into a new random variable W with bounded remaining correlation to X. [...]
2020 - 10.1109/ISIT44484.2020.9174416
IEEE International Symposium on Information Theory. Los Angeles, CA, USA, 21-26 June 2020, p. 2383-2388  

Llibres i col·leccions 1 registres trobats  
1.
15 p, 532.3 KB Implementing unitary 2-designs using random diagonal-unitary matrices / Nakata, Yoshifumi (Leibniz Universität Hannover) ; Hirche, Christoph (Leibniz Universität Hannover) ; Morgan, Ciara (Leibniz Universität Hannover) ; Winter, Andreas (Universitat Autònoma de Barcelona. Departament de Física)
Unitary 2-designs are random unitary matrices which, in contrast to their Haar-distributed counterparts, have been shown to be efficiently realized by quantum circuits. Most notably, unitary 2-designs are known to achieve decoupling, a fundamental primitive of paramount importance in quantum Shannon theory. [...]
Dagstuhl : Leibniz-Zentrum fuer Informatik, 2015 (Leibniz International Proceedings in Informatics (LIPIcs) ; 44) - 10.4230/LIPIcs.TQC.2015.191
10th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2015), 2015, p. 191-205  

Documents de recerca 1 registres trobats  
1.
182 p, 2.1 MB From asymptotic hypothesis testing to entropy inequalities / Hirche, Christoph ; Calsamiglia Costa, John, dir. ; Universitat Autònoma de Barcelona. Departament de Física
Aquesta tesi tracta sobre la relació entre el contrast d'hipòtesis quàntiques i les desigualtats entròpiques en la teoria quàntica de la informació. A la primera part de la tesi ens centrem en el contrast d'hipòtesis. [...]
Esta tesis trata sobre la relación entre el contraste de hipótesis cuánticas y las desigualdades entrópicas en la teoría cuántica de la información. En la primera parte de la tesis nos centramos en el contraste de hipótesis. [...]
This thesis addresses the interplay between asymptotic hypothesis testing and entropy inequalities in quantum information theory. In the first part of the thesis we focus on hypothesis testing. Here, we consider two main settings; one can either fix quantum states while optimizing over possible measurements or fix a measurement and evaluate its capability to discriminate quantum states by optimizing over such states. [...]

[Barcelona] : Universitat Autònoma de Barcelona, 2018.  

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