Nonclassical higher-order photon correlations with a quantum dot strongly coupled to a photonic-crystal nanocavity

Armand Rundquist, Michal Bajcsy, Arka Majumdar, Tomas Sarmiento, Kevin Fischer, Konstantinos G. Lagoudakis, Sonia Buckley, Alexander Y. Piggott, Jelena Vučković

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We use the third- and fourth-order autocorrelation functions g(3)(τ1,τ2) and g(4)(τ1,τ2,τ3) to detect the nonclassical character of the light transmitted through a photonic-crystal nanocavity containing a strongly coupled quantum dot probed with a train of coherent light pulses. We contrast the value of g(3)(0,0) with the conventionally used g(2)(0) and demonstrate that, in addition to being necessary for detecting two-photon states emitted by a low-intensity source, g(3) provides a more clear indication of the nonclassical character of a light source. We also present preliminary data that demonstrates bunching in the fourth-order autocorrelation function g(4)(τ1,τ2,τ3) as the first step toward detecting three-photon states.
Original languageEnglish
Article number023846
Number of pages1
JournalPhysical Review A
Issue number2
Publication statusPublished - 25 Aug 2014


  • photonic crystal nanocavity
  • nanocavities
  • quantum dot

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