Invention Publication
- Patent Title: QUANTUM DEVICE FACILITATING SUPPRESSION OF ZZ INTERACTIONS BETWEEN TWO-JUNCTION SUPERCONDUCTING QUBITS
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Application No.: US18670042Application Date: 2024-05-21
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Publication No.: US20240306519A1Publication Date: 2024-09-12
- Inventor: Aaron Finck , April Carniol , John Blair
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- The original application number of the division: US18159777 2023.01.26
- Main IPC: H10N69/00
- IPC: H10N69/00 ; G06N10/00 ; H01P3/00 ; H10N60/12 ; H10N60/80

Abstract:
Devices and/or computer-implemented methods facilitating static ZZ suppression and Purcell loss reduction using mode-selective coupling in two-junction superconducting qubits are provided. In an embodiment, a device can comprise a superconducting bus resonator. The device can further comprise a first superconducting qubit. The device can further comprise a second superconducting qubit, the first superconducting qubit and the second superconducting qubit respectively comprising: a first superconducting pad; a second superconducting pad; a third superconducting pad; a first Josephson Junction coupled to the first superconducting pad and the second superconducting pad; and a second Josephson Junction coupled to the second superconducting pad and the third superconducting pad. The first superconducting pad and the second superconducting pad of the first superconducting qubit and the second superconducting qubit are coupled to the superconducting bus resonator. The superconducting bus resonator entangles the first superconducting qubit and the second superconducting qubit based on receiving a control signal.
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