Deciphering the spectral collapse in two-photon Rabi model

Abstract In this communication, based upon a squeezed-state trial wave function, we have performed a simple variational study of the spectral collapse of the two-photon Rabi model. Our analysis indicates that the light-matter interaction and the spin-flipping effectively constitute two competing imp...

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Autor principal:	C. F. Lo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f62ae641f38d4efd841740c9cb60beb5
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spelling	oai:doaj.org-article:f62ae641f38d4efd841740c9cb60beb52021-12-02T15:52:47ZDeciphering the spectral collapse in two-photon Rabi model10.1038/s41598-021-90085-x2045-2322https://doaj.org/article/f62ae641f38d4efd841740c9cb60beb52021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90085-xhttps://doaj.org/toc/2045-2322Abstract In this communication, based upon a squeezed-state trial wave function, we have performed a simple variational study of the spectral collapse of the two-photon Rabi model. Our analysis indicates that the light-matter interaction and the spin-flipping effectively constitute two competing impacts upon the radiation mode. Whilst the former tries to decrease the radiation mode frequency, the latter may counteract or reinforce it, contingent upon the state of the atomic system. The light–matter interaction appears to dominate the frequency modulation as its coupling strength goes beyond the critical value, leading to the emergence of the spectral collapse. However, at the critical coupling the dominance of the light–matter interaction is not complete, and incomplete spectral collapse appears. The extent of incomplete spectral collapse is found to depend upon the energy difference between the two atomic levels as well.C. F. LoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-5 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q C. F. Lo Deciphering the spectral collapse in two-photon Rabi model
description	Abstract In this communication, based upon a squeezed-state trial wave function, we have performed a simple variational study of the spectral collapse of the two-photon Rabi model. Our analysis indicates that the light-matter interaction and the spin-flipping effectively constitute two competing impacts upon the radiation mode. Whilst the former tries to decrease the radiation mode frequency, the latter may counteract or reinforce it, contingent upon the state of the atomic system. The light–matter interaction appears to dominate the frequency modulation as its coupling strength goes beyond the critical value, leading to the emergence of the spectral collapse. However, at the critical coupling the dominance of the light–matter interaction is not complete, and incomplete spectral collapse appears. The extent of incomplete spectral collapse is found to depend upon the energy difference between the two atomic levels as well.
format	article
author	C. F. Lo
author_facet	C. F. Lo
author_sort	C. F. Lo
title	Deciphering the spectral collapse in two-photon Rabi model
title_short	Deciphering the spectral collapse in two-photon Rabi model
title_full	Deciphering the spectral collapse in two-photon Rabi model
title_fullStr	Deciphering the spectral collapse in two-photon Rabi model
title_full_unstemmed	Deciphering the spectral collapse in two-photon Rabi model
title_sort	deciphering the spectral collapse in two-photon rabi model
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f62ae641f38d4efd841740c9cb60beb5
work_keys_str_mv	AT cflo decipheringthespectralcollapseintwophotonrabimodel
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Deciphering the spectral collapse in two-photon Rabi model

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