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Asia Communications and Photonics Conference

Strongly sub-Poissonian photon generation in three coupled ring-microcavities containing a quantum dot

Jihan Zhang, Wen Zhang, Zhongyuan Yu, Yumin Liu, Han Ye

Published Jan 1, 2015• 0 citations
Publisher

Abstract

Photon statistics of three coupled ring-microcavities with a quantum dot in one cavity is studied. Strongly sub-Poissonian character can be achieved by optimizing laser detuning and ratio between driving strengths of two empty cavities.
DOI
10.1364/acpc.2015.asu2a.9

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The quantum dynamics of a double quantum dot two-level system, coupled to a leaking microwave resonator mode, is theoretically investigated. The double quantum dot is driven by applying a continuous field giving rise to time-dependent modulations of its energy separation between the ground levels of each dot, forming the qubit. Therefore, the cavity resonances occur when the difference between the resonator and the qubit frequencies equals the multiple of the modulation frequency, respectively. In the strong Coulomb interaction limit and the weak couplings of the combined system, i.e. the qubit and the single-mode cavity, to corresponding electronic, phononic or photonic reservoirs, we have demonstrated that the output cavity electromagnetic field is formed of a single-photon flux obeying the sub-Poissonian quantum photon statistics. This was proved via Fano's factor behaviour or by comparing the resonator's second- and third-order photon correlation functions, respectively. The phonon, the cavity mode dephasing or the environmental temperatures influence on the quantum properties of the photons are also discussed.