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arXiv · 1905.08280

Quantum Transport of Rydberg Excitons with Synthetic Spin-Exchange Interactions

Fan Yang·Shuo Yang·Li You
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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.

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Fan Yang, Shuo Yang, Li You. 2019-05-20. Quantum Transport of Rydberg Excitons with Synthetic Spin-Exchange Interactions. https://doi.org/10.1103/physrevlett.123.063001

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