Zobrazeno 1 - 10
of 401
pro vyhledávání: '"Horodecki Pawel"'
In quantum information theory, the evolution of an open quantum system -- a unitary evolution followed by a measurement -- is described by a quantum channel or, more generally, a quantum instrument. In this work, we formulate spin and flavour measure
Externí odkaz:
http://arxiv.org/abs/2412.01892
Non-projective measurements are resourceful in several information-processing protocols. In this work, we propose an operational task involving space-like separated parties to detect measurements that are neither projective nor a classical post-proce
Externí odkaz:
http://arxiv.org/abs/2412.00213
Quantum query complexity mainly studies the number of queries needed to learn some property of a black box with high probability. A closely related question is how well an algorithm can succeed with this learning task using only a fixed number of que
Externí odkaz:
http://arxiv.org/abs/2409.15549
In this contribution we present a concise introduction to quantum entanglement in multipartite systems. After a brief comparison between bipartite systems and the simplest non-trivial multipartite scenario involving three parties, we review mathemati
Externí odkaz:
http://arxiv.org/abs/2409.04566
Autor:
Hansenne, Kiara, Qu, Rui, Weinbrenner, Lisa T., de Gois, Carlos, Wang, Haifei, Ming, Yang, Yang, Zhengning, Horodecki, Paweł, Gao, Weibo, Gühne, Otfried
Characterising large scale quantum systems is central for fundamental physics as well as for applications of quantum technologies. While a full characterisation requires exponentially increasing effort, focusing on application-relevant information ca
Externí odkaz:
http://arxiv.org/abs/2408.05730
Energy dissipation, typically considered an undesirable process, has recently been shown to be harnessed as a resource to optimize the performance of a quantum battery. Following this perspective, we introduce a novel technique of charging in which c
Externí odkaz:
http://arxiv.org/abs/2407.16553
Autor:
Salazar, Roberto, Czartowski, Jakub, Rodríguez, Ricard Ravell, Rajchel-Mieldzioć, Grzegorz, Horodecki, Paweł, Życzkowski, Karol
A class of quantum resource theories, based on non-convex star-shape sets, presented in this work captures the key quantum properties that cannot be studied by standard convex theories. We provide operational interpretations for a resource of this cl
Externí odkaz:
http://arxiv.org/abs/2405.05785
Publikováno v:
Phys. Rev. Lett. 132, 210402 (2024)
Nonreciprocity, arising from the breaking of time-reversal symmetry, has become a fundamental tool in diverse quantum technology applications. It enables directional flow of signals and efficient noise suppression, constituting a key element in the a
Externí odkaz:
http://arxiv.org/abs/2401.05090
Publikováno v:
Phys. Rev. Lett. 133, 060202 (2024)
A black hole evaporates by Hawking radiation. Each mode of that radiation is thermal. If the total state is nevertheless to be pure, modes must be entangled. Estimating the minimum size of this entanglement has been an important outstanding issue. We
Externí odkaz:
http://arxiv.org/abs/2311.10562
Autor:
Trávníček, Vojtěch, Roik, Jan, Bartkiewicz, Karol, Černoch, Antonín, Horodecki, Paweł, Lemr, Karel
In this paper, we present a supervised learning technique that utilizes artificial neural networks to design new collective entanglement witnesses for two-qubit and qubit-qutrit systems. Machine-designed collective entanglement witnesses allow for co
Externí odkaz:
http://arxiv.org/abs/2307.08293