A 180 ns CZ gate with 99.62(4)% fidelity realized on P-mon qubits via resonant mediator-mode coupling, with ZZ interactions suppressed below 3.6(5) kHz.
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In two-transmon systems, a spectator qubit lowers the MIST threshold of the readout qubit and can itself be affected by the readout qubit's transitions, with a coupler further modifying both effects.
Experimental verification that transmon ionization under strong readout drives is a controllable Landau-Zener transition, with quantitative measurements of critical photon numbers and population transfer matching a semiclassical model.
citing papers explorer
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A high-fidelity two-qubit gate for multimode superconducting P-mon qubits
A 180 ns CZ gate with 99.62(4)% fidelity realized on P-mon qubits via resonant mediator-mode coupling, with ZZ interactions suppressed below 3.6(5) kHz.
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Measurement-induced state transitions in multi-qubit transmon processors
In two-transmon systems, a spectator qubit lowers the MIST threshold of the readout qubit and can itself be affected by the readout qubit's transitions, with a coupler further modifying both effects.
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Probing excited-state dynamics of transmon ionization
Experimental verification that transmon ionization under strong readout drives is a controllable Landau-Zener transition, with quantitative measurements of critical photon numbers and population transfer matching a semiclassical model.