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quant-ph2026
Unlocking a fast adiabatic CZ gate and exact residual cancellation between fixed-frequency transmons using a floating tunable coupler
Angela Q. Chen, Xian Wu, Sarah Strong +1
Tunable couplers in superconducting qubit architectures enable strong qubit-qubit interactions for two-qubit gates while suppressing unwanted coupling during single-qubit operation…
quant-ph2021
Parametric-resonance entangling gates with a tunable coupler
Eyob A. Sete, Nicolas Didier, Angela Q. Chen +3
High-fidelity parametric gates have been demonstrated with superconducting qubits via rf flux modulation of the qubit frequency. The modulation however leads to renormalization of…
quant-ph2021
Floating tunable coupler for scalable quantum computing architectures
Eyob A. Sete, Angela Q. Chen, Riccardo Manenti +2
We propose a floating tunable coupler that does not rely on direct qubit-qubit coupling capacitances to achieve the zero-coupling condition. We show that the polarity of the qubit-…