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Title: Thermodynamic resources in continuous-variable quantum systems
Authors: Narasimhachar, Varun
Assad, Syed
Binder, Felix Christoph
Thompson, Jayne
Yadin, Benjamin
Gu, Mile
Keywords: Science::Mathematics
Issue Date: 2021
Source: Narasimhachar, V., Assad, S., Binder, F. C., Thompson, J., Yadin, B., & Gu, M. (2021). Thermodynamic resources in continuous-variable quantum systems. npj Quantum Information, 7(1), 9-. doi:10.1038/s41534-020-00342-6
Project: NRF-NRFF2016-0
Journal: npj Quantum Information
Abstract: Thermodynamic resources, beyond their well-known usefulness in work extraction and other thermodynamic tasks, are often important also in tasks that are not evidently thermodynamic. Here we develop a framework for identifying such resources in diverse applications of bosonic continuous-variable systems. Introducing the class of bosonic linear thermal operations to model operationally feasible processes, we apply this model to identify uniquely quantum properties of bosonic states that refine classical notions of thermodynamic resourcefulness. Among these are (1) a suite of temperature-like quantities generalizing the equilibrium temperature to quantum, non-equilibrium scenarios; (2) signal-to-noise ratios quantifying a system’s capacity to carry information in phase-space displacement; and (3) well-established non-classicality measures quantifying the resolution in sensing and parameter estimation tasks.
ISSN: 2056-6387
DOI: 10.1038/s41534-020-00342-6
Rights: © 2021 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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