Bose-Einstein condensation of photons in an erbium-ytterbium co-doped fiber cavity.

ABSTRACT: Bose-Einstein condensation (BEC) is a special many-boson phenomenon that was observed in atomic particles at ultra-low temperatures. Later, BEC was also shown for non-atomic bosons, such as photons. Those experiments were usually done in micron-size cavities, where the power (particle number) was varied, and not the temperature, until condensation was reached. Here we demonstrate BEC of photons in a few-meters-long one-dimensional (1D) erbium-ytterbium co-doped fiber cavity at, below and above room temperature, between 100 K and 415 K. The experiments were done at about the 1550 nm wavelength regime having a few to tens of μW intra-cavity light power (10⁷-10⁸ photons). By varying the power and also the temperature, we found linear dependence of the condensation on pow

SUBMITTER: Weill R 

PROVIDER: S-EPMC6376030 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature