Abstract

We discuss generation of two types of entangled states of two photons: noon state, which is entangled in number and polarization, and polarization-entangled state, which is entangled in polarization and frequency. We consider a single quantum dot coupled with a bimodal cavity in a strong coupling regime. We analyze the effect of exciton–phonon coupling on concurrence of the generated entangled states. We find that for both states, concurrence is maximum in the absence of an anisotropic energy gap between exciton states and remains unchanged in the presence of exciton–phonon coupling. However, for finite anisotropic, energy gap concurrence decreases with increasing temperature of the phonon bath.

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