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We present a scheme to realize a deterministic solid state source of time-binentangled photon pairs using cavity-assisted stimulated Raman adiabatic passage(STIRAP) in a single quantum dot. The quantum dot is embedded inside asemiconductor cavity, and the interaction of a coherent superposition of twotemporally separated input pulses and the cavity mode leads to a two-photonRaman transition, which produces a time-bin entangled photon pair through thebiexciton-exciton cascade. We show that the entanglement of the generated statecan be measured using triple coincidence detection, and the degree ofentanglement is quantified as the visibility of the interference. We alsodiscuss the effect of pure dephasing on entanglement of the generated photonpair. Pronounced interference visibility values of greater than $1/\sqrt{2}$are demonstrated in triple coincidence measurement using experimentallyachievable parameters, thus demonstrating that the generated photons aresuitable for applications with Bell's inequality violation and quantumcryptography.

Generation of time-bin entangled photon pairs using a quantum-dot cavity system