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US 2019/0165245 A1Published application
Laser annealing qubits for optimized frequency allocation
AssigneeInternational Business Machines Corporation
InventorsSami Rosenblatt, Jason S. Orcutt, Jerry M. Chow
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Abstract
A qubit may be formed by forming a Josephson junction between two capacitive plates. The Josephson junction may be an aluminum/aluminum-oxide/aluminum trilayer Josephson junction on a substrate. The Josephson junction may be annealed with a thermal source. Annealing the Josephson junction may alter the frequency of the qubit.
Claims21
A method for forming a qubit, the method comprising:
- forming a Josephson junction between two capacitive plates, wherein the Josephson junction is an aluminum/aluminum-oxide/aluminum trilayer Josephson junction on a substrate;
- and
- annealing the Josephson junction with a thermal source, wherein the thermal source is a laser that generates a beam, the beam having a diameter that is greater than a diameter of the Josephson junction, wherein the diameter of the beam encompasses one or more portions of each of the two capacitive plates, and wherein annealing the Josephson junction alters the frequency of the qubit.
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Dependencies are inferred from the claim text.