MAQCY: Modular Atom-Array Quantum Computing with Space-Time Hybrid Multiplexing

• URL: http://arxiv.org/abs/2510.02940v1
• Date: Fri, 03 Oct 2025 12:31:16 GMT
• Title: MAQCY: Modular Atom-Array Quantum Computing with Space-Time Hybrid Multiplexing
• Abstract summary: We present a modular atom-array quantum computing architecture with space-time hybrid multiplexing (MAQCY)<n>MAQCY is a dynamic optical tweezer-based protocol for fully connected and scalable universal quantum computation.<n>We also propose a concrete implementation using ytterbium isotopes, paving the way toward large-scale, fault-tolerant quantum computing.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a modular atom-array quantum computing architecture with space-time hybrid multiplexing (MAQCY), a dynamic optical tweezer-based protocol for fully connected and scalable universal quantum computation. By extending the concept of globally controlled static dual-species Rydberg atom wires [1], we develop an entirely new approach using Q-Pairs, which consist of globally controlled and temporally multiplexed dual-species Rydberg blockaded atom and superatom pairs. Space-time hybrid multiplexing of Q-Pairs achieves O(N) linear scaling in the number of required physical qubits, while preserving coherence and mitigating circuit-depth limitations through in-situ atom replacement. To demonstrate MAQCY's versatility, we implement a three-qubit quantum Fourier transform using only global operations and atom transport. We also propose a concrete implementation using ytterbium isotopes, paving the way toward large-scale, fault-tolerant quantum computing.

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