Perfect intrinsic squeezing at the superradiant phase transition critical point

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dc.citation.articleNumber2526en_US
dc.citation.journalTitleScientific Reportsen_US
dc.citation.volumeNumber13en_US
dc.contributor.authorHayashida, Kenjien_US
dc.contributor.authorMakihara, Takumaen_US
dc.contributor.authorMarquez Peraca, Nicolasen_US
dc.contributor.authorFallas Padilla, Diegoen_US
dc.contributor.authorPu, Hanen_US
dc.contributor.authorKono, Junichiroen_US
dc.contributor.authorBamba, Motoakien_US
dc.date.accessioned2023-03-10T19:04:20Zen_US
dc.date.available2023-03-10T19:04:20Zen_US
dc.date.issued2023en_US
dc.description.abstractSome of the most exotic properties of the quantum vacuum are predicted in ultrastrongly coupled photon–atom systems; one such property is quantum squeezing leading to suppressed quantum fluctuations of photons and atoms. This squeezing is unique because (1) it is realized in the ground state of the system and does not require external driving, and (2) the squeezing can be perfect in the sense that quantum fluctuations of certain observables are completely suppressed. Specifically, we investigate the ground state of the Dicke model, which describes atoms collectively coupled to a single photonic mode, and we found that the photon–atom fluctuation vanishes at the onset of the superradiant phase transition in the thermodynamic limit of an infinite number of atoms. Moreover, when a finite number of atoms is considered, the variance of the fluctuation around the critical point asymptotically converges to zero, as the number of atoms is increased. In contrast to the squeezed states of flying photons obtained using standard generation protocols with external driving, the squeezing obtained in the ground state of the ultrastrongly coupled photon–atom systems is resilient against unpredictable noise.en_US
dc.identifier.citationHayashida, Kenji, Makihara, Takuma, Marquez Peraca, Nicolas, et al.. "Perfect intrinsic squeezing at the superradiant phase transition critical point." <i>Scientific Reports,</i> 13, (2023) Springer Nature: https://doi.org/10.1038/s41598-023-29202-x.en_US
dc.identifier.digitals41598-023-29202-xen_US
dc.identifier.doihttps://doi.org/10.1038/s41598-023-29202-xen_US
dc.identifier.urihttps://hdl.handle.net/1911/114515en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis 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/.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/.en_US
dc.titlePerfect intrinsic squeezing at the superradiant phase transition critical pointen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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