1. Condensation of 2D exciton-polaritons in an open-access microcavity.
- Author
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Li, Feng, Li, Yiming, Giriunas, L., Sich, M., Solnyshkov, D. D., Malpuech, G., Trichet, A. A. P., Smith, J. M., Clarke, E., Skolnick, M. S., and Krizhanovskii, D. N.
- Subjects
POLARITONS ,DISTRIBUTED Bragg reflectors ,CONDENSATION ,NANOPOSITIONING systems - Abstract
We establish a tunable open-access microcavity consisting of two planar distributed Bragg reflectors (DBRs) individually controlled by nanopositioners. By varying the cavity length, such configuration enables variation of the light–matter coupling strength by a factor of 2, while keeping in microresonators the same active region and cavity mirrors. Polariton condensation was demonstrated over a large range of Rabi splittings and the corresponding threshold diagram was derived as a function of cavity-exciton detuning, which fits well with theoretical simulations. The results show that for various light-matter coupling strengths, optimal detunings featured by the lowest condensation threshold always occur at a fixed depth of energy trap between the exciton reservoir and the polariton ground state, which enables the most efficient exciton–exciton scattering into the condensate state in the driven-dissipative polaritonic system. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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