Realization of a density-dependent Peierls phase in a synthetic, spin-orbit coupled Rydberg system

• URL: http://arxiv.org/abs/2001.10357v1
• Date: Tue, 28 Jan 2020 14:29:40 GMT
• Title: Realization of a density-dependent Peierls phase in a synthetic, spin-orbit coupled Rydberg system
• Authors: Vincent Lienhard, Pascal Scholl, Sebastian Weber, Daniel Barredo, Sylvain de L\'es\'eleuc, Rukmani Bai, Nicolai Lang, Michael Fleischhauer, Hans Peter B\"uchler, Thierry Lahaye, Antoine Browaeys
• Abstract summary: We experimentally realize a Peierls phase in the hopping amplitude of excitations carried by Rydberg atoms. We observe the resulting characteristic chiral motion in a minimal setup of three sites.
• Score: 0.13107669223114085
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We experimentally realize a Peierls phase in the hopping amplitude of excitations carried by Rydberg atoms, and observe the resulting characteristic chiral motion in a minimal setup of three sites. Our demonstration relies on the intrinsic spin-orbit coupling of the dipolar exchange interaction combined with time-reversal symmetry breaking by a homogeneous external magnetic field. Remarkably, the phase of the hopping amplitude between two sites strongly depends on the occupancy of the third site, thus leading to a correlated hopping associated to a density-dependent Peierls phase. We experimentally observe this density-dependent hopping and show that the excitations behave as anyonic particles with a non-trivial phase under exchange. Finally, we confirm the dependence of the Peierls phase on the geometrical arrangement of the Rydberg atoms.

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