Toshiba’s Double-Transmon Coupler for Superconducting Quantum Computers Achieves 99.9% Fidelity0 (0)
Insider Brief: Toshiba and RIKEN successfully developed the Double-Transmon Coupler, achieving a two-qubit gate fidelity of 99.90%. The coupler improves gate speed (48 ns), extends coherence time, and reduces residual coupling strength to 6 kHz, […]

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