Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session K33: Superconducting Gates
8:00 AM–11:00 AM,
Wednesday, March 7, 2018
LACC Room: 408B
Sponsoring Unit: DQI
Chair: Alexandre Blais, Univ of Sherbrooke
Abstract: K33.00006 : Speeding up entangling gates for fixed-frequency superconducting qubits
9:48 AM–10:00 AM
Superconducting transmon qubits have a weak nonlinearity which leads to spectral crowding in multi-qubit circuits. This is one of the obstacles to fast and accurate entangling gates. Previously we introduced SWIPHT, an analytical protocol for designing fast, high-fidelity two-qubit gates, and we showed that SWIPHT exhibits high performance in a particular regime of static system parameters. Here, we show that this regime can be greatly extended by overcoming coherent errors and leakage through the use of the DRAG protocol and pulse shaping, respectively. This enables a reduction of SWIPHT CNOT gate times down to the order of 10 ns while maintaining fidelities above the 99% level using simple pulse shapes.
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