Quantum device facilitating suppression of ZZ interactions between two-junction superconducting qubits

    公开(公告)号:US12022750B2

    公开(公告)日:2024-06-25

    申请号:US18159777

    申请日:2023-01-26

    CPC classification number: H10N69/00 G06N10/00 H01P3/003 H10N60/12 H10N60/805

    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.

    QUANTUM DEVICE FACILITATING SUPPRESSION OF ZZ INTERACTIONS BETWEEN TWO-JUNCTION SUPERCONDUCTING QUBITS

    公开(公告)号:US20210408113A1

    公开(公告)日:2021-12-30

    申请号:US16917056

    申请日:2020-06-30

    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.

    Driving dark modes to facilitate entanglement

    公开(公告)号:US11620562B2

    公开(公告)日:2023-04-04

    申请号:US17409425

    申请日:2021-08-23

    Abstract: Systems and techniques that facilitate entanglement via driving dark modes are provided. In various embodiments, a method can comprise accessing a first multi-mode qubit and a second multi-mode qubit. In various cases, the first multi-mode qubit can be coupled to the second multi-mode qubit by a mode-selective coupler. In various aspects, the method can further comprise exciting a dark mode of the first multi-mode qubit. In various cases, the exciting the dark mode can entangle the first multi-mode qubit with the second multi-mode qubit.

    DRIVING DARK MODES TO FACILITATE ENTANGLEMENT

    公开(公告)号:US20230053543A1

    公开(公告)日:2023-02-23

    申请号:US17409425

    申请日:2021-08-23

    Abstract: Systems and techniques that facilitate entanglement via driving dark modes are provided. In various embodiments, a method can comprise accessing a first multi-mode qubit and a second multi-mode qubit. In various cases, the first multi-mode qubit can be coupled to the second multi-mode qubit by a mode-selective coupler. In various aspects, the method can further comprise exciting a dark mode of the first multi-mode qubit. In various cases, the exciting the dark mode can entangle the first multi-mode qubit with the second multi-mode qubit.

    QUANTUM DEVICE FACILITATING SUPPRESSION OF ZZ INTERACTIONS BETWEEN TWO-JUNCTION SUPERCONDUCTING QUBITS

    公开(公告)号:US20240306519A1

    公开(公告)日:2024-09-12

    申请号:US18670042

    申请日:2024-05-21

    CPC classification number: H10N69/00 G06N10/00 H01P3/003 H10N60/12 H10N60/805

    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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