Author:
Lange Nina Amelie,Schapeler Timon,Höpker Jan Philipp,Protte Maximilian,Bartley Tim J.
Abstract
We show a HOM dip between degenerate signal and idler photons at (1559.33 ± 0.05) nm from cryogenic integrated SPDC in lithium niobate, compatible with superconducting detectors. This is enabled by precise control over the cryogenic phase-matching.