Entanglement generation from athermality

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 thermal process to generate bipartite qubit entangle...

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Main Authors: de Oliveira Junior, A., Son, Jeongrak, Czartowski, Jakub, Ng, Nelly Huei Ying
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/181621
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1816212024-12-16T15:35:47Z Entanglement generation from athermality de Oliveira Junior, A. Son, Jeongrak Czartowski, Jakub Ng, Nelly Huei Ying School of Physical and Mathematical Sciences Physics Entanglement generation Qubit entanglement 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 thermal process to generate bipartite qubit entanglement, starting from an initially separable state. Consequently, we identify the set of system states that cannot be entangled, when no external work is invested. In the regime of infinite temperature, we analytically construct this set; while for finite temperature, we provide a simple criterion to verify whether any given initial state is or is not entanglable. Furthermore, we provide an explicit construction of the future thermal cone of entanglement - the set of entangled states that a given separable state can thermodynamically evolve to. We offer a detailed discussion on the properties of this cone, focusing on the interplay between entanglement and its volumetric properties. We conclude with several key remarks on the generation of entanglement beyond two-qubit systems, and discuss its dynamics in the presence of dissipation. Nanyang Technological University Published version A.O.J. acknowledges financial support from the Danish National Research Foundation grant bigQ (DNRF 142) and VILLUM FONDEN through a research grant (40864). J.S. and N.N. are supported by the start-up grant for Nanyang Assistant Professorship of Nanyang Technological University, Singapore, awarded to N.H.Y.N. J.C. acknowledges financial support by NCN PRELUDIUM BIS No. DEC-2019/35/O/ST2/01049. 2024-12-11T00:40:17Z 2024-12-11T00:40:17Z 2024 Journal Article de Oliveira Junior, A., Son, J., Czartowski, J. & Ng, N. H. Y. (2024). Entanglement generation from athermality. Physical Review Research, 6(3), 033236-. https://dx.doi.org/10.1103/PhysRevResearch.6.033236 2643-1564 https://hdl.handle.net/10356/181621 10.1103/PhysRevResearch.6.033236 2-s2.0-85203605612 3 6 033236 en NAP SUG Physical Review Research © The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Physics
Entanglement generation
Qubit entanglement
spellingShingle Physics
Entanglement generation
Qubit entanglement
de Oliveira Junior, A.
Son, Jeongrak
Czartowski, Jakub
Ng, Nelly Huei Ying
Entanglement generation from athermality
description 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 thermal process to generate bipartite qubit entanglement, starting from an initially separable state. Consequently, we identify the set of system states that cannot be entangled, when no external work is invested. In the regime of infinite temperature, we analytically construct this set; while for finite temperature, we provide a simple criterion to verify whether any given initial state is or is not entanglable. Furthermore, we provide an explicit construction of the future thermal cone of entanglement - the set of entangled states that a given separable state can thermodynamically evolve to. We offer a detailed discussion on the properties of this cone, focusing on the interplay between entanglement and its volumetric properties. We conclude with several key remarks on the generation of entanglement beyond two-qubit systems, and discuss its dynamics in the presence of dissipation.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
de Oliveira Junior, A.
Son, Jeongrak
Czartowski, Jakub
Ng, Nelly Huei Ying
format Article
author de Oliveira Junior, A.
Son, Jeongrak
Czartowski, Jakub
Ng, Nelly Huei Ying
author_sort de Oliveira Junior, A.
title Entanglement generation from athermality
title_short Entanglement generation from athermality
title_full Entanglement generation from athermality
title_fullStr Entanglement generation from athermality
title_full_unstemmed Entanglement generation from athermality
title_sort entanglement generation from athermality
publishDate 2024
url https://hdl.handle.net/10356/181621
_version_ 1819112951528816640