Abstract
We propose a scheme to generate strongly sub-Poissonian light via photon blockade in a photonic crystal nanocavity embedded with a χ (2) nonlinear material and two interacting quantum dots (QD). The second- order correlation function at zero time delay g (2)(0) in our scheme can be reduced to g (2)(0) ∼ 10−3 by a large χ (2) nonlinearity and by optimizing the QD and optical cavity detuning. Our proposal provides a highly tunable and efficient method for single photon source on demand which has potential applications in solid state based quantum information processing.
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