Second Thresholds in BEC-BCS-Laser Crossover of Exciton-Polariton Systems
Mesoscale and Nanoscale Physics
2014-12-15 v4 Quantum Gases
Abstract
The mechanism of second thresholds observed in several experiments is theoretically revealed by studying the BEC-BCS-laser crossover in exciton-polariton systems. We found that there are two different types for the second thresholds; one is a crossover within quasi-equilibrium phases and the other is into non-equilibrium (lasing). In both cases, the light-induced band renormalization causes gaps in the conduction and valence bands, which indicates the exsistence of bound electron-hole pairs in contrast to earlier expectations. We also show that these two types can be distinguished by the gain spectra.
Keywords
Cite
@article{arxiv.1301.4838,
title = {Second Thresholds in BEC-BCS-Laser Crossover of Exciton-Polariton Systems},
author = {Makoto Yamaguchi and Kenji Kamide and Ryota Nii and Tetsuo Ogawa and Yoshihisa Yamamoto},
journal= {arXiv preprint arXiv:1301.4838},
year = {2014}
}
Comments
10pages, 4figures. Accepted in Physical Review Letters. Several typing errors are corrected