Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases
We have studied conditions of photon Bose-Einstein condensate formation that is in thermodynamic equilibrium with ideal gas of two-level Bose atoms below the degeneracy temperature. Equations describing thermodynamic equilibrium in the system were formulated; critical temperatures and densities of p...
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Online Access: | http://dx.doi.org/10.5488/CMP.18.43002 |
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doaj-e898614ac37f4d01952a1da97e2bf70e2020-11-24T22:46:40ZengInstitute for Condensed Matter PhysicsCondensed Matter Physics1607-324X2015-12-011844300210.5488/CMP.18.43002Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gasesN. Boichenko Yu. Slyusarenko We have studied conditions of photon Bose-Einstein condensate formation that is in thermodynamic equilibrium with ideal gas of two-level Bose atoms below the degeneracy temperature. Equations describing thermodynamic equilibrium in the system were formulated; critical temperatures and densities of photonic and atomic gas subsystems were obtained analytically. Coexistence conditions of these photonic and atomic Bose-Einstein condensates were found. There was predicted the possibility of an abrupt type of photon condensation in the presence of Bose condensate of ground-state atoms: it was shown that the slightest decrease of the temperature could cause a significant gathering of photons in the condensate. This case could be treated as a simple model of the situation known as "stopped light" in cold atomic gas. We also showed how population inversion of atomic levels can be created by lowering the temperature. The latter situation looks promising for light accumulation in atomic vapor at very low temperatures.http://dx.doi.org/10.5488/CMP.18.43002 ideal gasesthermodynamic equilibriumBose-Einstein condensate of photonscoexistence of Bose-Einstein condensates |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N. Boichenko Yu. Slyusarenko |
spellingShingle |
N. Boichenko Yu. Slyusarenko Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases Condensed Matter Physics ideal gases thermodynamic equilibrium Bose-Einstein condensate of photons coexistence of Bose-Einstein condensates |
author_facet |
N. Boichenko Yu. Slyusarenko |
author_sort |
N. Boichenko |
title |
Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases |
title_short |
Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases |
title_full |
Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases |
title_fullStr |
Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases |
title_full_unstemmed |
Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases |
title_sort |
coexistence of photonic and atomic bose-einstein condensates in ideal atomic gases |
publisher |
Institute for Condensed Matter Physics |
series |
Condensed Matter Physics |
issn |
1607-324X |
publishDate |
2015-12-01 |
description |
We have studied conditions of photon Bose-Einstein condensate formation that is in thermodynamic equilibrium with ideal gas of two-level Bose atoms below the degeneracy temperature. Equations describing thermodynamic equilibrium in the system were formulated; critical temperatures and densities of photonic and atomic gas subsystems were obtained analytically. Coexistence conditions of these photonic and atomic Bose-Einstein condensates were found. There was predicted the possibility of an abrupt type of photon condensation in the presence of Bose condensate of ground-state atoms: it was shown that the slightest decrease of the temperature could cause a significant gathering of photons in the condensate. This case could be treated as a simple model of the situation known as "stopped light" in cold atomic gas. We also showed how population inversion of atomic levels can be created by lowering the temperature. The latter situation looks promising for light accumulation in atomic vapor at very low temperatures. |
topic |
ideal gases thermodynamic equilibrium Bose-Einstein condensate of photons coexistence of Bose-Einstein condensates |
url |
http://dx.doi.org/10.5488/CMP.18.43002 |
work_keys_str_mv |
AT nboichenko coexistenceofphotonicandatomicboseeinsteincondensatesinidealatomicgases AT yuslyusarenko coexistenceofphotonicandatomicboseeinsteincondensatesinidealatomicgases |
_version_ |
1725684337662230528 |