Fig. 5
From: Dynamically tuned non-classical light emission from atomic defects in hexagonal boron nitride
Photon time-binning via spectral filtering of the surface acoustic wave (SAW)-driven emission wavelength modulation. a Sketch of the sinusoidal temporal modulation of the emission energy (black solid line) of a hexagonal boron nitride defect. The horizontal blue rectangle plotted on top of the sinusoidal spectral tuning depicts the energy window over which photons are collected. The vertical blue rectangles labeled “photons out” outline the temporal emission profile for the selected spectral detection window. b Time-averaged photoluminescence spectrum of the SAW-split zero-phonon line ZPL3. The three superimposed horizontal color-coded rectangles mark the energy regions used for spectral filtering. The red dashed line designates the fit using Eq. (1). c The three traces (A, B and C) represent the time-dependent luminescence (in units of the SAW period) spectrally filtered at energies indicated by the corresponding horizontal color-coded rectangles in a
