Multiple-qubit wave-activated controlled gate
AssigneeInternational Business Machines Corporation
InventorsJerry M. Chow, Jay M. Gambetta, Seth T. Merkel, Chad T. Rigetti, Matthias Steffen
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Abstract
A device includes a housing, at least two qubits disposed in the housing and a resonator disposed in the housing and coupled to the at least two qubits, wherein the at least two qubits are maintained at a fixed frequency and are statically coupled to one another via the resonator, wherein energy levels |03> and |12> are closely aligned, wherein a tuned microwave signal applied to the qubit activates a two-qubit phase interaction.
Claims8
A microwave-activated controlled-phase (MAP) gate method, comprising:
- coupling a first qubit to a second qubit via a resonator line bus thereby generating a MAP gate, wherein a |03> energy level is equal to a |12> energy level;
- tuning the MAP gate;
- selecting a time Tgate by sweeping through a range of durations T;
- and
- establishing a two-qubit coupled system via the MAP gate.
A microwave-activated controlled-phase (MAP) gate method, comprising:
- coupling a first qubit to a second qubit via a resonator line bus wherein a |03>energy level is equal to a |12> energy level;
- and
- applying a microwave drive signal in a cross-resonant manner to the first qubit, at a drive frequency approximately at the |1> to |2> transition of the second qubit,
- wherein the microwave drive signal is split in half with a π pulse applied on the first and second qubits inserted in between the split microwave drive signal to remove additional phase errors.
Dependencies are inferred from the claim text.