Frequency tuning of multi-qubit systems
AssigneeInternational Business Machines Corporation
InventorsJared B. Hertzberg, Jason S. Orcutt, Hanhee Paik, Sami Rosenblatt, Martin O. Sandberg
Life of this patent
Estimating the term…
Abstract
The invention includes methods, and the structures formed, for multi-qubit chips. The methods may include annealing a Josephson junction of a qubit to either increase or decrease the frequency of the qubit. The conditions of the anneal may be based on historical conditions, and may be chosen to tune each qubit to a desired frequency.
Claims25
A method of forming a multi-qubit chip, the method comprising:
- forming a plurality of qubits on a chip, wherein each qubit comprises a Josephson junction;
- determining an initial frequency of each qubit on the chip;
- based on the initial frequency of each qubit, determining a set-point frequency for each qubit of the chip;
- and
- annealing a first Josephson junction of a first qubit of the plurality of qubits, wherein annealing the first Josephson junction causes the first qubit to change from a first frequency to about the set-point frequency.
A method of forming a multi-qubit chip, the method comprising:
- determining a set-point frequency for each of the plurality of qubits on the chip;
- forming the plurality of qubits on the chip, wherein each qubit comprises a Josephson junction;
- determining a first frequency of a first qubit of the plurality of qubits;
- and
- annealing the Josephson junction of the first qubit, wherein annealing the Josephson junction causes the qubit to change from the first frequency to about the set-point frequency.
A multi-qubit chip formed by:
- forming a plurality of qubits on a chip, wherein each qubit comprises a Josephson junction;
- determining an initial frequency of each qubit on the chip;
- based on the initial frequency, determine a set-point frequency for each qubit of the chip;
- and
- annealing a first Josephson junction of a first qubit of the plurality of qubits, wherein annealing the first Josephson junction causes the first qubit to change from the first frequency to about the set-point frequency.
A multi-qubit chip formed by:
- determining a set-point frequency for a plurality of qubits on a chip;
- forming the plurality of qubits on the chip, wherein each qubit comprises a Josephson junction;
- determining a first frequency of a first qubit of a plurality of qubits;
- annealing the Josephson junction, wherein annealing the Josephson junction causes the qubit to change from the first frequency to about the set-point frequency.
A multi-qubit chip comprising:
- a first qubit containing a first Josephson junction;
- and
- a second qubit containing a second Josephson junction, wherein a first resistance of the first Josephson junction is different from a second resistance of the second Josephson junction.
Dependencies are inferred from the claim text.