Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Henrik Wilming"'
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)
Abstract When a generic quantum system is prepared in a simple initial condition, it typically equilibrates toward a state that can be described by a thermal ensemble. A known exception is localized systems that are non-ergodic and do not thermalize;
Externí odkaz:
https://doaj.org/article/4976a51033f246a0a787f58978e58c2e
Publikováno v:
Quantum, Vol 7, p 1166 (2023)
Catalysts are quantum systems that open up dynamical pathways between quantum states which are otherwise inaccessible under a given set of operational restrictions while, at the same time, they do not change their quantum state. We here consider the
Externí odkaz:
https://doaj.org/article/6c188afdafed4fe2959c55ce6b2bed35
Autor:
Henrik Wilming
Publikováno v:
Quantum, Vol 6, p 858 (2022)
I show that if a finite-dimensional density matrix has strictly smaller von Neumann entropy than a second one of the same dimension (and the rank is not bigger), then sufficiently (but finitely) many tensor-copies of the first density matrix majorize
Externí odkaz:
https://doaj.org/article/b141e7bad4eb4d439c5e588a969bba95
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010325 (2022)
The variance of (relative) surprisal, also known as varentropy, so far mostly plays a role in information theory as quantifying the leading-order corrections to asymptotic independent and identically distributed (IID) limits. Here, we comprehensively
Externí odkaz:
https://doaj.org/article/5128e0a3481441dca8d07ff66b066475
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
The minimal amount of assumptions to justify the use of maximum-entropy ensembles is still debated. Here, the authors show that the transitions that a partially known system environment can undergo are the same allowed for the maximum entropy state w
Externí odkaz:
https://doaj.org/article/77cc2c576ee7463eb09fd3a9728dab53
Publikováno v:
Quantum, Vol 4, p 231 (2020)
Fluctuation theorems impose constraints on possible work extraction probabilities in thermodynamical processes. These constraints are stronger than the usual second law, which is concerned only with average values. Here, we show that such constraints
Externí odkaz:
https://doaj.org/article/5e4a2d6942d943f3b238abd1ba48e951
Publikováno v:
Quantum, Vol 3, p 153 (2019)
Optimal (reversible) processes in thermodynamics can be modelled as step-by-step processes, where the system is successively thermalized with respect to different Hamiltonians by an external thermal bath. However, in practice interactions between sys
Externí odkaz:
https://doaj.org/article/84b7c79f21264c49a02cd3b8e580b94f
Autor:
Henrik Wilming, JINZHAO WANG
Publikováno v:
Journal of Mathematical Physics, 63 (5)
We provide a transparent, simple, and unified treatment of recent results on the equality conditions for the data-processing inequality of the sandwiched quantum Rényi divergence, including the statement that the equality in the data-processing impl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abcbd09d020111dee3f64003ac86ecd2
Autor:
Henrik Wilming
Publikováno v:
Physical Review Letters. 127
I show that non-decreasing entropy provides a necessary and sufficient condition to convert the state of a physical system into a different state by a reversible transformation that acts on the system of interest and a further "catalyst" whose state
Autor:
Henrik Wilming, Rodrigo Gallego
Publikováno v:
Physical Review X, Vol 7, Iss 4, p 041033 (2017)
The third law of thermodynamics in the form of the unattainability principle states that exact ground-state cooling requires infinite resources. Here, we investigate the amount of nonequilibrium resources needed for approximate cooling. We consider a
Externí odkaz:
https://doaj.org/article/a663a33b8f034fa4a46df2028c4d2eef