Abstract
We use the third- and fourth-order autocorrelation functions and 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 with the conventionally used and demonstrate that, in addition to being necessary for detecting two-photon states emitted by a low-intensity source, 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 as the first step toward detecting three-photon states.
- Received 12 July 2013
- Revised 27 March 2014
DOI:https://doi.org/10.1103/PhysRevA.90.023846
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