Scalable Fluxonium-Transmon Architecture for Error Corrected Quantum Processors
A hybrid superconducting architecture is proposed that alternates fluxonium and transmon qubits, coupled through transmon-based tunable couplers. The design is reported to suppress ZZ crosstalk when idle and reduce level-crowding difficulties. The authors argue these properties support scaling toward error-corrected processors.
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What this could mean
- 0–2 yearsPlausible
If the predicted zero-ZZ regime is confirmed in fabricated devices, this architecture could enable prototype multi-qubit fluxonium-transmon arrays used as error-correction testbeds within two years.
Fluxonium qubits, transmon qubits, and tunable couplers have each been demonstrated experimentally, and this proposal supplies concrete parameter targets. Small-scale fabrication and validation are therefore near-term engineering steps, though they depend on reproducing the predicted coupling and coherence properties in real hardware.
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