Negativity of quasiprobability distributions as a measure of nonclassicality

We demonstrate that the negative volume of any s-parametrized quasiprobability, including the Glauber-Sudashan P function, can be consistently defined and forms a continuous hierarchy of nonclassicality measures that are linear optical monotones. These measures belong to an operational resource theo...

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Main Authors: Tan, Kok Chuan, Choi, Seongjeon, Jeong, Hyunseok
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/138232
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1382322023-02-28T19:47:03Z Negativity of quasiprobability distributions as a measure of nonclassicality Tan, Kok Chuan Choi, Seongjeon Jeong, Hyunseok School of Physical and Mathematical Sciences Science::Physics Quantum Information Quantum Optics We demonstrate that the negative volume of any s-parametrized quasiprobability, including the Glauber-Sudashan P function, can be consistently defined and forms a continuous hierarchy of nonclassicality measures that are linear optical monotones. These measures belong to an operational resource theory of nonclassicality based on linear optical operations. The negativity of the Glauber-Sudashan P function, in particular, can be shown to have an operational interpretation as the robustness of nonclassicality. We then introduce an approximate linear optical monotone, and we show that this nonclassicality quantifier is computable and is able to identify the nonclassicality of nearly all nonclassical states. Published version 2020-04-29T06:33:17Z 2020-04-29T06:33:17Z 2020 Journal Article Tan, K. C., Choi, S., & Jeong, H. (2020). Negativity of quasiprobability distributions as a measure of nonclassicality. Physical Review Letters, 124(11), 110404-. doi:10.1103/physrevlett.124.110404 0031-9007 https://hdl.handle.net/10356/138232 10.1103/PhysRevLett.124.110404 11 124 en Physical Review Letters © 2020 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Quantum Information
Quantum Optics
spellingShingle Science::Physics
Quantum Information
Quantum Optics
Tan, Kok Chuan
Choi, Seongjeon
Jeong, Hyunseok
Negativity of quasiprobability distributions as a measure of nonclassicality
description We demonstrate that the negative volume of any s-parametrized quasiprobability, including the Glauber-Sudashan P function, can be consistently defined and forms a continuous hierarchy of nonclassicality measures that are linear optical monotones. These measures belong to an operational resource theory of nonclassicality based on linear optical operations. The negativity of the Glauber-Sudashan P function, in particular, can be shown to have an operational interpretation as the robustness of nonclassicality. We then introduce an approximate linear optical monotone, and we show that this nonclassicality quantifier is computable and is able to identify the nonclassicality of nearly all nonclassical states.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Tan, Kok Chuan
Choi, Seongjeon
Jeong, Hyunseok
format Article
author Tan, Kok Chuan
Choi, Seongjeon
Jeong, Hyunseok
author_sort Tan, Kok Chuan
title Negativity of quasiprobability distributions as a measure of nonclassicality
title_short Negativity of quasiprobability distributions as a measure of nonclassicality
title_full Negativity of quasiprobability distributions as a measure of nonclassicality
title_fullStr Negativity of quasiprobability distributions as a measure of nonclassicality
title_full_unstemmed Negativity of quasiprobability distributions as a measure of nonclassicality
title_sort negativity of quasiprobability distributions as a measure of nonclassicality
publishDate 2020
url https://hdl.handle.net/10356/138232
_version_ 1759853465244270592