Directional Transport in Rydberg Atom Arrays via Kinetic Constraints and Temporal Modulation

TL;DR

This paper presents a practical method for achieving directional quantum excitation transport in Rydberg atom arrays using kinetic constraints and temporal modulation, enabling controlled entanglement distribution without local addressing.

Contribution

It introduces a novel scheme combining distance-dependent interactions and laser detuning modulation for directional transport in atomic arrays with unequal spacings.

Findings

Robust and coherent transport demonstrated through numerical simulations.

Controlled transport of Bell pairs while maintaining entanglement.

Applicable to scalable quantum networks and quantum simulation.

Abstract

We propose an experimentally feasible scheme to achieve directional transport of Rydberg excitations and entangled states in atomic arrays with unequal spacings. By leveraging distance-dependent Rydberg-Rydberg interactions and temporally modulated laser detunings, our method directs excitation flow without requiring local addressing. Numerical simulations demonstrate robust and coherent transport under experimentally realistic conditions. Additionally, we show that this scheme enables controlled transport of Bell pairs and preserves entanglement during propagation. The approach provides a versatile platform for programmable directional transport, with potential applications in quantum simulation, entanglement distribution, and the design of scalable quantum processors and networks.