Abstract

Dipolaritons are quasiparticles formed in double quantum wells’ microcavities driven by a coherent field. Here, we investigate the correlations and the quantum fluctuations in the light emitted by a dipolariton cavity pumped by a laser. By studying the noise spectrum in the strong and weak coupling regimes, we show that the squeezing generated by the direct and indirect excitonic nonlinearities is strongly enhanced by coupling the system to a squeezed vacuum. As a consequence, this coupling transforms the statistical light propriety from coherent to highly squeezed states, depending on the squeeze parameter strength. Furthermore, the squeezed reservoir stabilizes the nonclassical effect even with the high fluctuations caused by indirect exciton nonlinearity. It turns out that the combination of excitonic nonlinearities and squeezed vacuum is a good solution for producing stable and strong squeezing.

© 2020 Optical Society of America

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