Photon condensation: A new paradigm for Bose–Einstein condensation
| Autor: | K. Senthilnathan, Renju Rajan, P. Ramesh Babu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Physics and Astronomy (miscellaneous) Bose gas Condensed Matter::Other Physics::Optics 01 natural sciences 010305 fluids & plasmas law.invention Superfluidity symbols.namesake Gross–Pitaevskii equation Bose–Einstein statistics law Quantum mechanics Quantum electrodynamics Magnetic trap 0103 physical sciences symbols State of matter Bose–Einstein condensation Physics::Atomic Physics 010306 general physics Bose–Einstein condensate |
| Zdroj: | Frontiers of Physics. 11 |
| ISSN: | 2095-0470 2095-0462 |
| DOI: | 10.1007/s11467-016-0568-3 |
| Popis: | Bose–Einstein condensation is a state of matter known to be responsible for peculiar properties exhibited by superfluid Helium-4 and superconductors. Bose–Einstein condensate (BEC) in its pure form is realizable with alkali atoms under ultra-cold temperatures. In this paper, we review the experimental scheme that demonstrates the atomic Bose–Einstein condensate. We also elaborate on the theoretical framework for atomic Bose–Einstein condensation, which includes statistical mechanics and the Gross–Pitaevskii equation. As an extension, we discuss Bose–Einstein condensation of photons realized in a fluorescent dye filled optical microcavity. We analyze this phenomenon based on the generalized Planck’s law in statistical mechanics. Further, a comparison is made between photon condensate and laser. We describe how photon condensate may be a possible alternative for lasers since it does not require an energy consuming population inversion process. |
| Databáze: | OpenAIRE |
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