Fast Microwave-free State Preparation and Measurement of Superconducting Qubits
A preprint describes a microwave-free approach to preparing and measuring the state of superconducting qubits. It targets the calibrated microwave signals and roughly 100 ns measurement times that the authors identify as obstacles to scaling superconducting quantum processors.
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What this could mean
- 0–2 yearsPlausible
If the method's fidelity and speed hold up outside the lab, it could be folded into cryogenic control stacks for multi-qubit superconducting processors within two years, reducing per-qubit microwave calibration overhead.
Removing tuned microwave signals would simplify the analog RF chain and calibration burden; the main gate is whether fidelities reach the 99%+ needed for fault-tolerant readout, which the abstract does not yet establish.
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