Photonic-band-gap architectures for long-lifetime room-temperature polariton condensation in GaAs quantum wells
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Bibliographic record
Abstract
We describe AlGaAs photonic-crystal architectures that simultaneously realize strong exciton-photon coupling, long polariton lifetime, and room-temperature polariton Bose-Einstein condensation (BEC). Strong light trapping, induced by a 3D photonic band gap (PBG), leads to peak field intensity 20 times as large as that in an AlGaAs Fabry-P\'erot microcavity and exciton-photon coupling as large as 20 meV (i.e., vacuum Rabi splitting 40 meV). The strong exciton-photon coupling, small polariton effective mass, and long polariton lifetime lead to possible realizations of equilibrium room-temperature BEC. We also consider the influence of polarization degeneracy and symmetry breaking in the ground state on the BEC-onset temperature and condensate fraction. Woodpile and slanted-pore PBG structures that break X-Y symmetry facilitate larger condensate fractions at moderate temperatures. The effects of electronic and photonic disorder are marginal, thanks to the 3D photonic band gap.
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| Category | Codex | Gemma |
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| Metaresearch | 0.000 | 0.000 |
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| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.001 |
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