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arXiv · 1710.03031

Correlations of cascaded photons: An analytical study in the two-photon Mollow regime

Alexander Carmele·Samir Bounouar·Max Strauß·Stephan Reitzenstein·Andreas Knorr
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Abstract

Mollow physics in the two-photon regime shows interesting features such as path-controlled time-reordering of photon pairs without the need to delay them. Here, we calculate analytically the two-photon correlations $ g^{(2)}(\tau)$, essential to discuss and study such phenomena in the resonant-driven dressed-state regime. It is shown that there exists upper and lower bounds of the $ g^{(2)}(\tau)-$ function for certain spectrally-selected photon pairs. Recent reported experiments agree with the presented theory and thereby it is shown that the resonant-driven four-level system is an interesting source for steerable quantum light in quantum cascade setups. We furthermore discuss the unlikeliness to observe antibunching for the delay time $ \tau=0 $ in the exciton-biexciton correlation functions in such experiments, since antibunching stems from a coherent and in-phase superposition of different photon emission events. Due to the occuring laser photon scattering, this coherent superposition state is easily disturbed and leads to correlation functions of $ g^{(2)}(0)=1$.

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Alexander Carmele, Samir Bounouar, Max Strauß, Stephan Reitzenstein, Andreas Knorr. 2017-10-09. Correlations of cascaded photons: An analytical study in the two-photon Mollow regime. https://doi.org/10.1103/physreva.99.023813

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