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Q: Fachverband Quantenoptik und Photonik
Q 37: Quantum Optics (Miscellaneous) V
Q 37.5: Talk
Wednesday, March 16, 2022, 15:15–15:30, Q-H14
First detection time statistics of many partially distinguishable particles — •Niklas Neubrand1, Christoph Dittel1,2, and Andreas Buchleitner1,2 — 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
We show how partial distinguishability between many identical bosons or fermions impacts the first detection time statistics after the particles' coherent evolution on a finite lattice. To this end, we generalize the formalism of stroboscopic projective measurements from the single-particle to the many-particle domain, and present numerical results for two non-interacting particles evolving on a one-dimensional lattice. We observe clear signatures of the particles' indistinguishability in the total detection probability and the first detection time. For particular evolution times between consecutive measurements, we find a discontinuous behavior of these quantities, which can be understood through degeneracies of the corresponding many-particle unitary evolution operator.