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Interactions in dye-microcavity photon condensates and the prospects for their observation
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Nyman, R. A. and Szymanska, M. H. (Marzena H.) (2014) Interactions in dye-microcavity photon condensates and the prospects for their observation. Physical Review A, Volume 89 (Number 3). 033844. doi:10.1103/PhysRevA.89.033844 ISSN 1050-2947.
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Official URL: http://dx.doi.org/10.1103/PhysRevA.89.033844
Abstract
We derive the equation of motion for a Bose-Einstein condensate of photons in a dye-microcavity system, starting from Maxwell's equations. Our theory takes into account mirror shape, Kerr-type intensity-dependent refractive index and incoherent pumping and loss. The resulting equation is remarkably similar to the Gross-Pitaevskii equation for exciton-polariton condensates, despite the different microscopic origins. We calculate the incoherent photoluminescence spectrum of the photon condensate, which shows the Bogoliubov-type excitations around the mean field at thermal equilibrium. Both open- and closed-system models are presented to account for, respectively dissipation and inhomogeneities. Considering realistic parameters and experimental resolution, we estimate that by observing the angle-resolved spectrum of incoherent photoluminescence it is possible to resolve dimensionless interaction parameters of order 10−5, two orders of magnitude below current estimates. Thus we expect that this technique will lead to accurate measurements of the interactions in photon condensates.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review A | ||||
Publisher: | American Physical Society | ||||
ISSN: | 1050-2947 | ||||
Official Date: | 24 March 2014 | ||||
Dates: |
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Volume: | Volume 89 | ||||
Number: | Number 3 | ||||
Article Number: | 033844 | ||||
DOI: | 10.1103/PhysRevA.89.033844 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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