Spectral Correlation Measurements at the Hong-Ou-Mandel Interference Dip

Published: January 22, 2015


Thomas Gerrits, Francesco Marsili, Varun B. Verma, Lynden K. Shalm, Jeffrey A. Stern, Matthew Shaw, Richard P. Mirin, Sae Woo Nam


We present an efficient tool capable of measuring the spectral correlations between photons emerging from a Hong-Ou-Mandel interference configuration. We show that the Hong-Ou-Mandel interference visibility decreases as the photons’ frequency spread is increased to a maximum of 165 nm. We show a maximum visibility of 97.0 ± 0.2 %, which was achieved with a spectrally factorizable spontaneous downconversion source. We show that the tool can be extremely useful for the study of spectral correlations that impair high-visibility and high-fidelity multi-source interference applications.
Citation: Physical Review Letters
Volume: 91
Issue: 1
Pub Type: Journals


squeezing, Hong Ou Mandel interference, on-chip quantum information processing, single photon detectors
Created January 22, 2015, Updated November 10, 2018