Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 33: Quantum Gases

Q 33.3: Talk

Wednesday, March 16, 2022, 14:30–14:45, Q-H10

Interference of composite particles — •Mama Kabir Njoya Mforifoum, Gabriel Dufour, and Andreas Buchleitner — Institut of Physics, Albert-Ludwigs university of Freiburg

The dynamics of systems of identical particles are characterized by many-body interference. However, the interfering particles (bosons or fermions) can be composite objects, raising the question of the conditions under which bound states of several particles behave as ideal elementary bosons or fermions. Here, we consider the dynamics on a 1D lattice of two composite bosons, each a bound state of two elementary fermions or bosons, and observe their Hong-Ou-Mandel interference on a potential barrier. We compare numerically exact simulations of the composite particles' dynamics with an effective model for tightly bound pairs. The latter allows us to identify parameter regimes where the composite objects exhibit strong bosonic interference.