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Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment

We investigate quantum advantages in loss sensing when the two-mode squeezed vacuum state is used as a probe. Following an experimental demonstration in PRX 4, 011049, we consider a quantum scheme in which the signal mode is passed through the target and a thermal noise is introduced to the idler mo...

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Autores principales: Park, Sang-il, Noh, Changsuk, Lee, Changhyoup
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10097776/
https://www.ncbi.nlm.nih.gov/pubmed/37045874
http://dx.doi.org/10.1038/s41598-023-32770-7
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author Park, Sang-il
Noh, Changsuk
Lee, Changhyoup
author_facet Park, Sang-il
Noh, Changsuk
Lee, Changhyoup
author_sort Park, Sang-il
collection PubMed
description We investigate quantum advantages in loss sensing when the two-mode squeezed vacuum state is used as a probe. Following an experimental demonstration in PRX 4, 011049, we consider a quantum scheme in which the signal mode is passed through the target and a thermal noise is introduced to the idler mode before they are measured. We consider two detection strategies of practical relevance: coincidence-counting and intensity-difference measurement, which are widely used in quantum sensing and imaging experiments. By computing the signal-to-noise ratio, we verify that quantum advantages persist even under strong thermal background noise, in comparison with the classical scheme which uses a single-mode coherent state that directly suffers from the thermal noise. Such robustness comes from the fact that the signal mode suffers from the thermal noise in the classical scheme, while in the quantum scheme, the idler mode does. For a fairer comparison, we further investigate a different setup in which the thermal noise is introduced to the signal mode in the quantum schemes. In this new setup, we show that the quantum advantages are significantly reduced. Remarkably, however, under an optimum measurement scheme associated with the quantum Fisher information, we show that the two-mode squeezed vacuum state does exhibit a quantum advantage over the entire range of the environmental noise and loss. We expect this work to serve as a guide for experimental demonstrations of quantum advantages in loss parameter sensing, which is subject to lossy and noisy environment.
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spelling pubmed-100977762023-04-14 Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment Park, Sang-il Noh, Changsuk Lee, Changhyoup Sci Rep Article We investigate quantum advantages in loss sensing when the two-mode squeezed vacuum state is used as a probe. Following an experimental demonstration in PRX 4, 011049, we consider a quantum scheme in which the signal mode is passed through the target and a thermal noise is introduced to the idler mode before they are measured. We consider two detection strategies of practical relevance: coincidence-counting and intensity-difference measurement, which are widely used in quantum sensing and imaging experiments. By computing the signal-to-noise ratio, we verify that quantum advantages persist even under strong thermal background noise, in comparison with the classical scheme which uses a single-mode coherent state that directly suffers from the thermal noise. Such robustness comes from the fact that the signal mode suffers from the thermal noise in the classical scheme, while in the quantum scheme, the idler mode does. For a fairer comparison, we further investigate a different setup in which the thermal noise is introduced to the signal mode in the quantum schemes. In this new setup, we show that the quantum advantages are significantly reduced. Remarkably, however, under an optimum measurement scheme associated with the quantum Fisher information, we show that the two-mode squeezed vacuum state does exhibit a quantum advantage over the entire range of the environmental noise and loss. We expect this work to serve as a guide for experimental demonstrations of quantum advantages in loss parameter sensing, which is subject to lossy and noisy environment. Nature Publishing Group UK 2023-04-12 /pmc/articles/PMC10097776/ /pubmed/37045874 http://dx.doi.org/10.1038/s41598-023-32770-7 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Park, Sang-il
Noh, Changsuk
Lee, Changhyoup
Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
title Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
title_full Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
title_fullStr Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
title_full_unstemmed Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
title_short Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
title_sort quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10097776/
https://www.ncbi.nlm.nih.gov/pubmed/37045874
http://dx.doi.org/10.1038/s41598-023-32770-7
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