SIMULATING LARGE CAT QUBITS USING A SHIFTED FOCK BASIS

    公开(公告)号:US20220156444A1

    公开(公告)日:2022-05-19

    申请号:US17098245

    申请日:2020-11-13

    Abstract: A method of simulating quantum gates includes shifting a Fock basis for the simulation such that the simulation can be performed in a smaller (e.g. truncated) Hilbert dimension space. To shift the Fock basis, non-orthonormalized basis states are first defined. The defined basis states are then orthonormalized to construct orthonormalized shifted Fock basis state. Matrix elements are determined for an operator in the orthonormalized shifted Fock basis and the operator is used to simulate the quantum gate in the shifted Fock basis.

    CROSS-TALK REDUCTION IN FAULT TOLERANT QUANTUM COMPUTING SYSTEM

    公开(公告)号:US20220180236A1

    公开(公告)日:2022-06-09

    申请号:US17217946

    申请日:2021-03-30

    Abstract: A fault tolerant quantum computer is implementing using hybrid acoustic-electric qubits. A control circuit includes an asymmetrically threaded superconducting quantum interference devices (ATS) that excites phonons in a mechanical resonator by driving a storage mode of the mechanical resonator and dissipates phonons from the mechanical resonator via an open transmission line coupled to the control circuit, wherein the open transmission line is configured to absorb photons from a dump mode of the control circuit. Filters are included in the control circuit to suppress cross-talk errors. Additionally, frequencies and pump mode detunings for respective multiplexed control circuits are strategically selected to reduce cross-talk errors.

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