Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Jakub Czartowski"'
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033236 (2024)
We investigate the thermodynamic constraints on the pivotal task of entanglement generation using out-of-equilibrium states through a model-independent framework with minimal assumptions. We establish a necessary and sufficient condition for a therma
Externí odkaz:
https://doaj.org/article/889ca5abf882411998f2e9244ca5740b
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033203 (2024)
What are the fundamental limits and advantages of using a catalyst to aid thermodynamic transformations between quantum systems? In this paper, we answer this question by focusing on transformations between energy-incoherent states under the most gen
Externí odkaz:
https://doaj.org/article/1bcde2399aa2432b9b8a5a4664da9fcf
Publikováno v:
Quantum, Vol 8, p 1341 (2024)
We propose an analogue of $\text{SU}(1,1)$ interferometry to measure rotation of a spin by using two-spin squeezed states. Attainability of the Heisenberg limit for the estimation of the rotation angle is demonstrated for maximal squeezing. For a spe
Externí odkaz:
https://doaj.org/article/0e7a4aa0049b4f8bb41815934e7bf6db
Publikováno v:
PRX Quantum, Vol 4, Iss 4, p 040304 (2023)
We develop a resource-theoretic framework that allows one to bridge the gap between two approaches to quantum thermodynamics based on Markovian thermal processes (which model memoryless dynamics) and thermal operations (which model arbitrarily non-Ma
Externí odkaz:
https://doaj.org/article/5b4669893663404186ebba06cbf3086a
Autor:
Jakub Czartowski, Karol Życzkowski
Publikováno v:
Quantum, Vol 5, p 442 (2021)
We analyse orthogonal bases in a composite $N\times N$ Hilbert space describing a bipartite quantum system and look for a basis with optimal single-sided mutual state distinguishability. This condition implies that in each subsystem the $N^2$ reduced
Externí odkaz:
https://doaj.org/article/53c35197acfa423f8ab0f6ef6b5b6459
Publikováno v:
Quantum, Vol 5, p 407 (2021)
The optimal allocation of resources is a crucial task for their efficient use in a wide range of practical applications in science and engineering. This paper investigates the optimal allocation of resources in multipartite quantum systems. In partic
Externí odkaz:
https://doaj.org/article/1c0282faeb494b27826960d5abb3b189
The second law of thermodynamics imposes a fundamental asymmetry in the flow of events. The so-called thermodynamic arrow of time introduces an ordering that divides the system's state space into past, future and incomparable regions. In this work, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::521f93c7d5fcfc2e3f039707ac2c2e84
http://arxiv.org/abs/2207.02237
http://arxiv.org/abs/2207.02237
Publikováno v:
Physical Review A. 104
We investigate the most general mechanisms that lead to perfect synchronization of the quantum states of all subsystems of an open quantum system starting from an arbitrary initial state. We provide a necessary and sufficient condition for such "quan
We investigate the joint (separable) numerical range of multiple measurements, i.e., the regions of expectation values accessible with (separable) quantum states for given observables. This not only enables efficient entanglement detection, but also
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b347466da676a5b001c9d5fde4083415
http://arxiv.org/abs/2107.04365
http://arxiv.org/abs/2107.04365
Autor:
Karol Zyczkowski, Jakub Czartowski
Publikováno v:
Quantum, Vol 5, p 442 (2021)
We analyse orthogonal bases in a composite $N\times N$ Hilbert space describing a bipartite quantum system and look for a basis with optimal single-sided mutual state distinguishability. This condition implies that in each subsystem the $N^2$ reduced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae4af81f764790f8058befc2e279e195
https://ruj.uj.edu.pl/xmlui/handle/item/271537
https://ruj.uj.edu.pl/xmlui/handle/item/271537