Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 12: Quantum Effects

Q 12.4: Talk

Monday, March 9, 2020, 14:45–15:00, f442

Extracting particle distinguishability from imperfect suppressions in many-particle interference — •Michael Minke, Christoph Dittel, and Andreas Buchleitner — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder Str. 3, 79104 Freiburg, Federal Republic of Germany

The Deviations from perfect suppression of the coincident output event in the two-particle Hong-Ou-Mandel experiment are indicative of some degree of mutual distinguishability between both particles. While Hong-Ou-Mandel-type suppression has been generalised to many perfectly indistinguishable particles, it remained unknown to date whether finite detection probabilities of output events which are suppressed in an ideal scenario likewise reveal information on the particles' distinguishability. Here we show that, in the evolution of four partially distinguishable particles on the two dimensional hypercube graph (or on a four-mode Sylvester interferometer), violations of suppression laws allow us to draw conclusions on the mutual distinguishability of all four constituents.