Mode multiplexing for scalable cavity-enhanced operations in neutral-atom arrays

2025/11/25 by Aqua, Ziv, Peters, Matthew L., Spierings, David C. +4
#FOS: Physical sciences #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.2511.20858

Abstract

Neutral atom arrays provide a versatile platform for quantum information processing. However, in large-scale arrays, efficient photon collection remains a bottleneck for key tasks such as fast, non-destructive qubit readout and remote entanglement distribution. We propose a cavity-based approach that enables fast, parallel operations over many atoms using multiple modes of a single optical cavity. By selectively shifting the relevant atomic transitions, each atom can be coupled to a distinct cavity mode, allowing independent simultaneous processing. We present practical system designs that support cavity-mode multiplexing with up to 50 modes, enabling rapid mid-circuit syndrome extraction and significantly enhancing entanglement distribution rates between remote atom arrays. This approach offers a scalable solution to core challenges in neutral atom arrays, advancing the development of practical quantum technologies.

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Related

• A cavity array microscope for parallel single-atom interfacing
• Error-Detected Quantum Operations with Neutral Atoms Mediated by an Optical Cavity
• High-rate and high-fidelity modular interconnects between neutral atom quantum processors
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• Cold atomic ensembles as quantum antennas for distributed networks of single-atom arrays