Quantum communication link robust against photon loss

    公开(公告)号:GB2573961B

    公开(公告)日:2022-01-12

    申请号:GB201912328

    申请日:2017-12-05

    Applicant: IBM

    Abstract: A technique relates to communication of a quantum state. Polarization hardware is configured to receive a polarization encoded qubit and split the polarization encoded qubit into two qubits. A converter is coupled to the polarization hardware, and the converter is configured to convert the two qubits into a form suitable for a CNOT gate. The CNOT gate is configured to receive the two qubits such that a measurement result of a CNOT operation of the CNOT gate determines success of the communication of the quantum state.

    Quantum communication link robust against photon loss

    公开(公告)号:GB2573961A

    公开(公告)日:2019-11-20

    申请号:GB201912328

    申请日:2017-12-05

    Applicant: IBM

    Abstract: A technique relates to communication of a quantum state. Polarization hardware is configured to receive a polarization encoded qubit and split the polarization encoded qubit into two qubits. Aconverter is coupled to the polarization hardware, and the converter is configured to convert the two qubits into a form suitable for a CNOT gate. The CNOT gate is configured to receive the two qubits such that a measurement result of a CNOT operation of the CNOT gate determines success of the communication of the quantum state.

    Read out of quantum states of microwave frequency qubits with optical frequency photons

    公开(公告)号:GB2567080B

    公开(公告)日:2021-04-14

    申请号:GB201900518

    申请日:2017-06-20

    Applicant: IBM

    Abstract: Techniques relate to reading a qubit coupled to a microwave resonator. A microwave signal at a microwave resonator frequency is input to the microwave resonator that couples to the qubit. A microwave readout signal from the microwave resonator is output to a microwave to optical converter. The microwave readout signal includes a qubit state of the qubit. The microwave to optical converter is configured to convert the microwave readout signal to an optical signal. In response to the optical signal being output by the microwave to optical converter, it is determined that the qubit is in a predefined qubit state. In response to no optical signal being output by the microwave to optical converter, it is determined that the qubit is not in the predefined qubit state.

    Job processing in quantum computing enabled cloud environments

    公开(公告)号:GB2581089A

    公开(公告)日:2020-08-05

    申请号:GB202006037

    申请日:2017-12-06

    Applicant: IBM

    Abstract: A compatibility is ascertained between a configuration of a quantum processor (q-processor) of a quantum cloud compute node (QCCN) in a quantum cloud environment (QCE) and an operation requested in a first instruction in a portion (q-portion) of a job submitted to the QCE, the QCE including the QCCN and a conventional compute node (CCN), the CCN including a conventional processor configured for binary computations. In response to the ascertaining, a quantum instruction (q-instruction) is constructed corresponding to the first instruction. The q- instruction is executed using the q-processor of the QCCN to produce a quantum output signal (q-signal). The q-signal is transformed into a corresponding quantum computing result (q- result). A final result is returned to a submitting system that submitted the job, wherein the final result comprises the q-result.

    Read out of quantum states of microwave frequency qubits with optical frequency photons

    公开(公告)号:GB2567080A

    公开(公告)日:2019-04-03

    申请号:GB201900518

    申请日:2017-06-20

    Applicant: IBM

    Abstract: Techniques relate to reading a qubit coupled to a microwave resonator.A microwave signal at a microwave resonator frequency is input to the microwave resonator that couples to the qubit. A microwave readout signal from the microwave resonator is output to a microwave to optical converter. The microwave readout signal includes a qubit state of the qubit. The microwave to optical converter is configured to convert the microwave readout signal to an optical signal. In response to the optical signal being output by the microwave to optical converter, it is determined that the qubit is in a predefined qubit state. In response to no optical signal being output by the microwave to optical converter, it is determined that the qubit is not in the predefined qubit state.

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