BUSES FOR MODULAR QUBIT DEVICES
    2.
    发明公开

    公开(公告)号:US20230359919A1

    公开(公告)日:2023-11-09

    申请号:US17819535

    申请日:2022-08-12

    CPC classification number: G06N10/40

    Abstract: One or more systems, devices and/or methods of use herein relate to modular quantum devices. According to an embodiment, a device can comprise a first module comprising a first qubit coupled to a first transmission line resonator, and a second module comprising a second qubit coupled to a second transmission line resonator, wherein the first module is embodied on a first chip and wherein the second module is embodied on a second chip.

    Current biased tunable qubit
    3.
    发明授权

    公开(公告)号:US12047063B2

    公开(公告)日:2024-07-23

    申请号:US18047792

    申请日:2022-10-19

    Inventor: Timothy Phung

    CPC classification number: H03K17/92 G06F30/394 G06N10/00 H10N69/00

    Abstract: Techniques for designing, creating, and utilizing a current biased tunable qubit are presented. A qubit device can comprise a first Josephson junction (JJ) located along a first current path of the device, and a second JJ and third JJ coupled in series along a second current path in parallel with the first current path, wherein the second and third JJs facilitate controlling frequency of the device. The first JJ can be larger in area than each of the second and third JJs, wherein a current splitting ratio between the first current path and second current path can be increased thereby. The device can comprise a capacitor with a first terminal associated with the second and third JJs, and a second terminal associated with ground. Alternatively, a high kinetic inductance wire can be used in the first current path, instead of the JJ.

    Current biased tunable qubit
    4.
    发明授权

    公开(公告)号:US11545974B2

    公开(公告)日:2023-01-03

    申请号:US17031369

    申请日:2020-09-24

    Inventor: Timothy Phung

    Abstract: Techniques for designing, creating, and utilizing a current biased tunable qubit are presented. A qubit device can comprise a first Josephson junction (JJ) located along a first current path of the device, and a second JJ and third JJ coupled in series along a second current path in parallel with the first current path, wherein the second and third JJs facilitate controlling frequency of the device. The first JJ can be larger in area than each of the second and third JJs, wherein a current splitting ratio between the first current path and second current path can be increased thereby. The device can comprise a capacitor with a first terminal associated with the second and third JJs, and a second terminal associated with ground. Alternatively, a high kinetic inductance wire can be used in the first current path, instead of the JJ.

    Offset embedded ground plane cutout

    公开(公告)号:US11411158B2

    公开(公告)日:2022-08-09

    申请号:US17130376

    申请日:2020-12-22

    Abstract: Techniques for creating an offset embedded ground plane cutout for a qubit device to facilitate frequency tuning of the qubit device are presented. A qubit device can comprise a first substrate and second substrate in a flip-chip assembly. The qubit chip assembly can comprise a qubit component fabricated on the first substrate. The qubit component can comprise a Josephson junction (JJ) circuit that can be offset from a center point of the qubit component. The qubit chip assembly can comprise an embedded ground plane situated on a surface of the qubit chip assembly. A cutout section can be formed in the ground plane and positioned over the JJ circuit. The cutout section can enable access of an optical signal or magnetic flux to the JJ circuit. A frequency of the qubit component can be tuned based on application of the optical signal or magnetic flux to the JJ circuit.

    REMOTE ENTANGLEMENT OF SUPERCONDUCTING QUANTUM BITS USING DOUBLE OPTICAL HERALDING

    公开(公告)号:US20250131304A1

    公开(公告)日:2025-04-24

    申请号:US18491583

    申请日:2023-10-20

    Abstract: Techniques are provided for performing an optically heralded entanglement process to entangle states of a first data quantum bit and a second data quantum bit into an entangled state of computational basis states comprising a ground state and a first excited state. An optically heralded entanglement process comprises performing a first optically heralded entanglement process to determine whether the entangled state of the first data quantum bit and the second data quantum bit excludes a state in which both the first data quantum bit and the second data quantum bit can be in the ground state, and performing a second optically heralded entanglement process to determine whether the entangled state of the first data quantum bit and the second data quantum bit excludes a state in which both the first data quantum bit and the second data quantum bit can be in the first excited state.

    Flux line filter
    9.
    发明授权

    公开(公告)号:US11714142B2

    公开(公告)日:2023-08-01

    申请号:US17119519

    申请日:2020-12-11

    CPC classification number: G01R33/0358 H01P1/047 H03H7/0138 H03H7/0153

    Abstract: Techniques for creating a low pass filter associated with a flux line are presented. A qubit device can comprise a first substrate and second substrate. A low pass filter, comprising at least one inductor and at least one capacitor can be formed, wherein respective components of or associated with the low pass filter can be formed on the first or second substrates, and wherein one or more bump bonds can extend between the substrates to connect respective components that are on respective substrates. The filter can receive an input signal via an input line and filter the signal to produce a filtered signal as output to a flux line that is in proximity to a coupler with SQUID loop and one or more flux-tunable qubits that are formed on one of the substrates. The filter can reduce electrical noise and Purcell decay associated with the flux line.

Patent Agency Ranking