# Quantum Transport of Rydberg Excitons with Synthetic Spin-Exchange Interactions

## TL;DR

This paper proposes a method to control quantum transport of Rydberg excitons using synthetic spin-exchange interactions, enabling exploration of novel transport phenomena and topological effects in engineered quantum systems.

## Contribution

It introduces a new scheme for quantum transport in Rydberg atoms utilizing synthetic interactions, avoiding the need for resonant dipole-dipole interactions, and is experimentally feasible.

## Key findings

- Demonstrates topological exciton pumping with quantized entanglement transfer
- Reveals nonlocal correlated transport phenomena resilient to dephasing
- Provides a tunable, long-range interaction scheme for quantum transport

## 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.