| Autor: |
Nyman, R. A., Szymanska, M. H. |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Phys. Rev. A 89, 033844 (2014) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevA.89.033844 |
| Popis: |
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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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