Photon statistics and coherence properties of hBN quantum emitters

Photonic quantum technologies require on-demand, indistinguishable photons (space, time, energy, and polarization) at high repetition rate. Recent discovery of quantum emission from atomically thin crystals of hexagonal boron nitride (hBN) has offered a promising candidate for single photon sources (SPSs). The realization of an efficient hBN SPS that delivers light pulses with one and only one photon requires full control over their photophysical properties and  integrability with conventional device substrates. 

In this talk, we present recent results on the measurement of the position and  dipole orientation of hBN quantum emitters with accuracy down to ~ 7 nm [1]. Room temperature photon statistics, quantified by Mandel-Q parameter, of these quantum emitters will be discussed. We report transformation of sub-Poissonian statistics of intensity fluctuations observed over the shorter (tens of nanosecond) times to super-Poissonian over the longer (tens of microseconds) times. Finally, we will present our on-going work on characterizing coherence properties of hBN quantum emitters, using folded scanning Michelson interferometer, on the way towards attaining near-transformed limited emitters for applications in remote sensing and imaging.