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Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits
Electromagnetic fields possess zero point fluctuations which lead to observable effects such as the Lamb shift and the Casimir effect. In the traditional quantum optics domain, these corrections remain perturbative due to the smallness of the fine structure constant. To provide a direct observation...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6868017/ https://www.ncbi.nlm.nih.gov/pubmed/31748501 http://dx.doi.org/10.1038/s41467-019-13199-x |
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author | Léger, Sébastien Puertas-Martínez, Javier Bharadwaj, Karthik Dassonneville, Rémy Delaforce, Jovian Foroughi, Farshad Milchakov, Vladimir Planat, Luca Buisson, Olivier Naud, Cécile Hasch-Guichard, Wiebke Florens, Serge Snyman, Izak Roch, Nicolas |
author_facet | Léger, Sébastien Puertas-Martínez, Javier Bharadwaj, Karthik Dassonneville, Rémy Delaforce, Jovian Foroughi, Farshad Milchakov, Vladimir Planat, Luca Buisson, Olivier Naud, Cécile Hasch-Guichard, Wiebke Florens, Serge Snyman, Izak Roch, Nicolas |
author_sort | Léger, Sébastien |
collection | PubMed |
description | Electromagnetic fields possess zero point fluctuations which lead to observable effects such as the Lamb shift and the Casimir effect. In the traditional quantum optics domain, these corrections remain perturbative due to the smallness of the fine structure constant. To provide a direct observation of non-perturbative effects driven by zero point fluctuations in an open quantum system we wire a highly non-linear Josephson junction to a high impedance transmission line, allowing large phase fluctuations across the junction. Consequently, the resonance of the former acquires a relative frequency shift that is orders of magnitude larger than for natural atoms. Detailed modeling confirms that this renormalization is non-linear and quantum. Remarkably, the junction transfers its non-linearity to about thirty environmental modes, a striking back-action effect that transcends the standard Caldeira-Leggett paradigm. This work opens many exciting prospects for longstanding quests such as the tailoring of many-body Hamiltonians in the strongly non-linear regime, the observation of Bloch oscillations, or the development of high-impedance qubits. |
format | Online Article Text |
id | pubmed-6868017 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-68680172019-11-22 Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits Léger, Sébastien Puertas-Martínez, Javier Bharadwaj, Karthik Dassonneville, Rémy Delaforce, Jovian Foroughi, Farshad Milchakov, Vladimir Planat, Luca Buisson, Olivier Naud, Cécile Hasch-Guichard, Wiebke Florens, Serge Snyman, Izak Roch, Nicolas Nat Commun Article Electromagnetic fields possess zero point fluctuations which lead to observable effects such as the Lamb shift and the Casimir effect. In the traditional quantum optics domain, these corrections remain perturbative due to the smallness of the fine structure constant. To provide a direct observation of non-perturbative effects driven by zero point fluctuations in an open quantum system we wire a highly non-linear Josephson junction to a high impedance transmission line, allowing large phase fluctuations across the junction. Consequently, the resonance of the former acquires a relative frequency shift that is orders of magnitude larger than for natural atoms. Detailed modeling confirms that this renormalization is non-linear and quantum. Remarkably, the junction transfers its non-linearity to about thirty environmental modes, a striking back-action effect that transcends the standard Caldeira-Leggett paradigm. This work opens many exciting prospects for longstanding quests such as the tailoring of many-body Hamiltonians in the strongly non-linear regime, the observation of Bloch oscillations, or the development of high-impedance qubits. Nature Publishing Group UK 2019-11-20 /pmc/articles/PMC6868017/ /pubmed/31748501 http://dx.doi.org/10.1038/s41467-019-13199-x Text en © The Author(s) 2019 Open Access 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 http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Léger, Sébastien Puertas-Martínez, Javier Bharadwaj, Karthik Dassonneville, Rémy Delaforce, Jovian Foroughi, Farshad Milchakov, Vladimir Planat, Luca Buisson, Olivier Naud, Cécile Hasch-Guichard, Wiebke Florens, Serge Snyman, Izak Roch, Nicolas Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits |
title | Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits |
title_full | Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits |
title_fullStr | Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits |
title_full_unstemmed | Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits |
title_short | Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits |
title_sort | observation of quantum many-body effects due to zero point fluctuations in superconducting circuits |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6868017/ https://www.ncbi.nlm.nih.gov/pubmed/31748501 http://dx.doi.org/10.1038/s41467-019-13199-x |
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