One and two-photon quantum interference in a Mach-Zehnder interferometer

Research output: Chapter in Book/Report/Conference proceedingConference contribution


  • A. Trenti
  • M. Borghi
  • M. Mancinelli
  • G. Fontana
  • L. Pavesi

Colleges, School and Institutes

External organisations

  • Physics Department A. Volta
  • CNR-INFM BEC Center


A re-visitation of the well known free space Mach Zehnder interferometer is here reported. Coexistence between one-photon and two-photons interference from collinear color entangled photon pairs is investigated. This is seen to arise from an arbitrarily small unbalance in the arm transmittance. The tuning of such asymmetry is reflected in dramatic changes in the coincidence detection, revealing beatings between one particle and two particle interference patterns. Our configuration explores new physics of the real Mach Zehnder interferometer especially useful for quantum optics on a chip, where the guiding geometry forces photons to travel in the same spatial mode.


Original languageEnglish
Title of host publicationNonlinear Optics and its Applications IV
Publication statusPublished - 27 Apr 2016
EventNonlinear Optics and its Applications IV - Brussels, Belgium
Duration: 4 Apr 20166 Apr 2016


ConferenceNonlinear Optics and its Applications IV


  • entangled photons, Mach-Zehnder interferometer, nonlinear optics, Quantum optics, SPDC