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double-transmon couplers 1fixed-frequency qubits 1modular superconducting processors 1remote entangling gates 1tunable zz interaction 1

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quant-ph2026

Tunable Nonlocal Interaction for Remote Controlled-Z Gates Between Distributed Fixed-Frequency Qubits

Benzheng Yuan, Chaojie Zhang, Haoran He +9

The paper proposes a modular superconducting quantum processor architecture that uses double‑transmon couplers and a 25‑cm coaxial cable to create a tunable nonlocal ZZ interaction…