Workflow from Scientific Research

Experimental setup including the PhC WG chip (light-green area), spectral filter (light-orange area) and the Franson interferometer (light-blue areas). The two Bloch spheres illustrate the two independently controlled phases a and b . SNSPD, superconducting nanowire single-photon detector; FC, fibre collimator; PC, polarization controller; FBS, fibre beam splitter; PD, photodiode; PID, proportionalintegralderivative. To control the phase difference between the two interferometer paths, we actively stabilize the UMZIs with a PID module locked by the same laser that excites the QD.

DOI