The Hong–Ou–Mandel Effect in a Waveguide Directional Coupler

R. Vilela Mendes

Yoel Olivier, Dan Cohen, Leonid Vidro +4 more

We characterize the spectral response of a silicon chip integrated non-perfect directional coupler by measuring the biphoton joint spectrum at the Hong-Ou-Mandel dip and show the resulting spectral coupling dependency.

Rafael Julius, Abdel-Baset M.A. Ibrahim, Mohd Kamil Abd-Rahman +1 more

Silia Babel, Laura Bollmers, Marcello Massaro +9 more

We design, fabricate, and characterise a balanced directional coupler in lithium niobate on insulator (LNOI) and use it to demonstrate Hong-Ou-Mandel interference of telecom photons with a raw visibility of (93.5±0.7) %.

Paolo Longo, Jared H. Cole, Kurt Busch

The Hong-Ou-Mandel effect is studied in the context of two-photon transport in a one-dimensional waveguide with a single scatterer. We numerically investigate the scattering problem within a time-dependent, wave-function-based framework. Depending on the realization of the scatterer and its properties, we calculate the joint probability of finding both photons on either side of the waveguide after scattering. We specifically point out how Hong-Ou-Mandel interferometry techniques could be exploited to identify effective photon-photon interactions which are mediated by the scatterer. The Hong-Ou-Mandel dip is discussed in detail for the case of a single two-level atom embedded in the waveguide, and dissipation and dephasing are taken into account by means of a quantum jump approach.

Jingbo Wang