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quant-ph2026
Instantaneous-Frame Theory of Strongly Driven Parametric Gates
Kentaro Kubo, Shinichi Inoue, Jushin Tei +3
Parametric two-qubit gates using tunable couplers are a promising approach to scalable superconducting quantum processors. However, conventional theories formulated in the idle eig…
quant-ph2026
Parametrically Driven iSWAP Gate Using a Capacitively Shunted Double-Transmon Coupler at the Zero-Flux Sweet Spot
Shinichi Inoue, Rui Li, Kentaro Kubo +3
A double-transmon coupler (DTC) enables a fast, high-fidelity CZ gate between two highly detuned, fixed-frequency transmon qubits. Moreover, a recently proposed capacitively shunte…