Compiler Framework for Directional Transport in Zoned Neutral Atom Systems with AOD Assistance: A Hybrid Remote CZ Approach
For quantum computing with neutral atoms, this work overcomes movement-bound entanglement bottlenecks, offering a practical compiler framework that significantly improves gate speed and connectivity.
The paper introduces a directional-transport-based remote CZ gate for zoned neutral-atom arrays, reducing entangling-stage duration by 50-90% compared to AOD-only baselines and enabling long-distance connectivity beyond shuttling limits.
We present a directional-transport (DT)-based remote CZ gate and compiler for zoned neutral-atom arrays that overcomes movement-bound entanglement limitations. Current AOD-based shuttling faces row/column non-crossing constraints, device-speed limits, and hardware-restricted range - bottlenecks for long-distance connectivity. Our approach reserves AODs for channel setup and micro-tuning while making DT the default for remote entanglement. Under antiblockade, a detuning-modulated pi-pulse sequence drives directional transport of a Rydberg excitation along a dynamic and resettable ancilla corridor, realizing a CZ gate between stationary, non-adjacent qubits. This cuts entangling-stage duration by approximately 50 to 90 percent versus AOD-only baselines and enables long-distance connectivity beyond objective-limited shuttling.