Quantum Transport of Rydberg Excitons with Synthetic Spin-Exchange Interactions

Abstract

We present a scheme for engineering quantum transport dynamics of spin excitations in a chain of laser-dressed Rydberg atoms, mediated by synthetic spin-exchange arising from diagonal van der Waals interaction. The dynamic tunability and long-range interaction feature of our scheme allows for the exploration of transport physics unattainable in conventional spin systems. As two concrete examples, we first demonstrate a topological exciton pumping protocol that facilitates quantized entanglement transfer, and secondly we discuss a highly nonlocal correlated transport phenomenon which persists even in the presence of dephasing. Unlike previous schemes, our proposal requires neither resonant dipole-dipole interaction nor off-diagonal van der Waals interaction. It can be readily implemented in existing experimental systems.

5 + 6 pages, 3 + 3 figures; accepted by Phys. Rev. Lett. (https://journals.aps.org/prl/accepted/de073YacN2715b6ec05880688688e315904d355dd)