Fig. 10: Dispersion-induced frequency-to-time mapping techniques in quantum optics.
From: Linear optical wave energy redistribution methods for photonic signal processing
a Experimental setup for measuring the joint spectral intensity (JSI) of entangled photon pairs by propagation in a dispersion compensating fiber. b Resulting JSI, measured in the time domain (axes showing the time-mapped frequencies). Image from163. c the phase of the joint spectral amplitude can be obtained by correlating the measurement of the spectrum of one photon from an entangled pair using dispersion-induced frequency-to-time mapping, while the spectral phase of the other photon is measured by electro-optic shearing interferometry. d For instance, this allows measuring correlations in the spectral phase resulting from chirped-pulse pumping. Figures adapted from164.
