Ultrafast thermal-free photoluminescence of coherently extended single quantum states

Abstract The coherent volume of single quantum states of matter is typically smaller than that of photons by several orders of magnitude, and hence, interactions between photons and single quantum states are normally very weak. This limits the speed of radiative decay of matter states in free space....

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Autores principales:	Takuya Matsuda, Masayoshi Ichimiya, Masaaki Ashida, Hajime Ishihara
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d99ad904aa4847789d1e2e0dfae974a0
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spelling	oai:doaj.org-article:d99ad904aa4847789d1e2e0dfae974a02021-12-02T15:09:16ZUltrafast thermal-free photoluminescence of coherently extended single quantum states10.1038/s41598-019-44940-72045-2322https://doaj.org/article/d99ad904aa4847789d1e2e0dfae974a02019-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-44940-7https://doaj.org/toc/2045-2322Abstract The coherent volume of single quantum states of matter is typically smaller than that of photons by several orders of magnitude, and hence, interactions between photons and single quantum states are normally very weak. This limits the speed of radiative decay of matter states in free space. Recent efforts to speed-up radiative processes have been focused on creating a small mode volume of photons using cavity systems, or on realizing spontaneous synchronization among quantum emitters to create a dipole at the macroscopic scale, which accelerates photon emission up to a couple of hundred femtoseconds. Here, we demonstrate the 10-fs class of photoluminescence (PL) of a single quantum state in solid thin films without the use of a photo-cavity system or the spontaneous synchronization effect. Significantly, this speed can beat thermal dephasing of relevant excited states at room temperature, which is typically a couple of tens of femtoseconds. The process occurs due to the giant interaction volume between light waves and the multipole excitonic waves. This result indicates the possibility to realize photoemission processes that complete before the thermal dephasing process activates, which opens up the hidden potential of ubiquitous solids as thermal-free or extremely low-energy-loss photonic materials.Takuya MatsudaMasayoshi IchimiyaMasaaki AshidaHajime IshiharaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takuya Matsuda Masayoshi Ichimiya Masaaki Ashida Hajime Ishihara Ultrafast thermal-free photoluminescence of coherently extended single quantum states
description	Abstract The coherent volume of single quantum states of matter is typically smaller than that of photons by several orders of magnitude, and hence, interactions between photons and single quantum states are normally very weak. This limits the speed of radiative decay of matter states in free space. Recent efforts to speed-up radiative processes have been focused on creating a small mode volume of photons using cavity systems, or on realizing spontaneous synchronization among quantum emitters to create a dipole at the macroscopic scale, which accelerates photon emission up to a couple of hundred femtoseconds. Here, we demonstrate the 10-fs class of photoluminescence (PL) of a single quantum state in solid thin films without the use of a photo-cavity system or the spontaneous synchronization effect. Significantly, this speed can beat thermal dephasing of relevant excited states at room temperature, which is typically a couple of tens of femtoseconds. The process occurs due to the giant interaction volume between light waves and the multipole excitonic waves. This result indicates the possibility to realize photoemission processes that complete before the thermal dephasing process activates, which opens up the hidden potential of ubiquitous solids as thermal-free or extremely low-energy-loss photonic materials.
format	article
author	Takuya Matsuda Masayoshi Ichimiya Masaaki Ashida Hajime Ishihara
author_facet	Takuya Matsuda Masayoshi Ichimiya Masaaki Ashida Hajime Ishihara
author_sort	Takuya Matsuda
title	Ultrafast thermal-free photoluminescence of coherently extended single quantum states
title_short	Ultrafast thermal-free photoluminescence of coherently extended single quantum states
title_full	Ultrafast thermal-free photoluminescence of coherently extended single quantum states
title_fullStr	Ultrafast thermal-free photoluminescence of coherently extended single quantum states
title_full_unstemmed	Ultrafast thermal-free photoluminescence of coherently extended single quantum states
title_sort	ultrafast thermal-free photoluminescence of coherently extended single quantum states
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/d99ad904aa4847789d1e2e0dfae974a0
work_keys_str_mv	AT takuyamatsuda ultrafastthermalfreephotoluminescenceofcoherentlyextendedsinglequantumstates AT masayoshiichimiya ultrafastthermalfreephotoluminescenceofcoherentlyextendedsinglequantumstates AT masaakiashida ultrafastthermalfreephotoluminescenceofcoherentlyextendedsinglequantumstates AT hajimeishihara ultrafastthermalfreephotoluminescenceofcoherentlyextendedsinglequantumstates
_version_	1718387907045097472

Ultrafast thermal-free photoluminescence of coherently extended single quantum states

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