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19 p, 513.4 KB Equilibration time scales of physically relevant observables / García-Pintos, Luis Pedro (University of Bristol. School of Mathematics) ; Linden, Noah (University of Bristol. School of Mathematics) ; Malabarba, Artur S. L. (Chapman University. Institute for Quantum Studies) ; Short, Anthony J. (Chapman University. Institute for Quantum Studies) ; Winter, Andreas (Institució Catalana de Recerca i Estudis Avançats)
We address the problem of understanding, from first principles, the conditions under which a quantum system equilibrates rapidly with respect to a concrete observable. On the one hand, previously known general upper bounds on the time scales of equilibration were unrealistically long, with times scaling linearly with the dimension of the Hilbert space. [...]
2017 - 10.1103/PhysRevX.7.031027
Physical Review X, Vol. 7, issue 3 (Aug. 2017) , e031027  

Llibres i col·leccions 1 registres trobats  
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15 p, 522.5 KB The quantum entropy cone of stabiliser states / Linden, Noah (University of Bristol. School of Mathematics) ; Matúš, František (Academy of Sciences of the Czech Republic) ; Ruskai, Mary Beth (Tufts University) ; Winter, Andreas (Universitat Autònoma de Barcelona. Departament de Física)
We investigate the universal linear inequalities that hold for the von Neumann entropies in a multi-party system, prepared in a stabiliser state. We demonstrate here that entropy vectors for stabiliser states satisfy, in addition to the classic inequalities, a type of linear rank inequalities associated with the combinatorial structure of normal subgroups of certain matrix groups. [...]
Dagstuhl : Leibniz-Zentrum fuer Informatik, 2013 (Leibniz International Proceedings in Informatics (LIPIcs) ; 22) - 10.4230/LIPIcs.TQC.2013.270
8th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2013), 2013, p. 270-284  

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