SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 65: Many-body Physics
Q 65.4: Talk
Friday, March 10, 2023, 11:45–12:00, F342
Many-particle interference in the tunneling dynamics of ultracold atoms experiencing dipole-dipole interactions — •Malte Henes1,2, Andreas Buchleitner1,2, and Christoph Dittel1,2,3 — 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany — 2EUCOR Centre for Quantum Science and Quantum Computing, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany — 3Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität Freiburg, Albertstraße 19, 79104 Freiburg, Germany
We study how dipole-dipole interactions affect many-particle interference in the tunneling dynamics of ultracold fermionic (87Sr) (or bosonic 88Sr) atoms, in a one-dimensional optical lattice or in an array of optical tweezers. The atoms’ tunneling is considered as fully coherent, mediated by a Hubbard-like Hamiltonian, and dipole-dipole interactions, induced by the atoms’ 1S0→ 3P0 clock transition, are modelled through a master equation with a coherent, dispersive, and an incoherent, dissipative part. As a result of the interplay between dipole-dipole interactions and tunneling dynamics, we identify perfectly subradiant (dark) states for fermions, and find that the reduced visibility contrast in the particles’ tunneling dynamics is indicative of the particles’ partial distinguishability – induced by their dissipative interaction with the electromagnetic environment.