Magnetic flux bias for pulse shaping of microwave signals

    公开(公告)号:IL295270A

    公开(公告)日:2022-10-01

    申请号:IL29527022

    申请日:2022-08-01

    Applicant: IBM BALEEGH ABDO

    Inventor: BALEEGH ABDO

    Abstract: A technique relates to a pulse shaping of microwave signals. A nondegenerate mixing device receives signals and a time-varying magnetic flux via input ports. The nondegenerate mixing device uses the signals and the time-varying magnetic flux to generate an output signal on an output port, the output signal having a waveform profile set by the time-varying magnetic flux.

    Multimode josephson parametric converter

    公开(公告)号:GB2558831B

    公开(公告)日:2021-11-17

    申请号:GB201805985

    申请日:2016-09-26

    Applicant: IBM

    Inventor: BALEEGH ABDO

    Abstract: A technique relates to operating a multimode Josephson parametric converter as a multimode quantum limited amplifier. The multimode Josephson parametric converter receives multiple quantum signals in parallel at different resonance frequencies. The multimode Josephson parametric converter amplifies simultaneously the multiple quantum signals, according to pump signals applied to the multimode Josephson parametric converter. The multiple quantum signals having been amplified at the different resonance frequencies are reflected, according to the pump signals.

    Capacitively-shunted asymmetric DC-SQUID for qubit readout and reset

    公开(公告)号:GB2581449A

    公开(公告)日:2020-08-19

    申请号:GB202005188

    申请日:2017-12-07

    Applicant: IBM

    Inventor: BALEEGH ABDO

    Abstract: A tunable resonator is formed by shunting a set of asymmetric DC-SQUIDs with a capacitive device. An asymmetric DC-SQUID includes a first Josephson junction and a second Josephson junction, where the critical currents of the first and second Josephson junctions are different. A coupling is formed between the tunable resonator and a qubit such that the capacitively-shunted asymmetric DC-SQUIDs can dispersively read a quantum state of the qubit. An external magnetic flux is set to a first value and applied to the tunable resonator. A first value of the external magnetic flux causes the tunable resonator to tune to a first frequency within a first frequency difference from a resonance frequency of the qubit, the tunable resonator tuning to the first frequency causes active reset of the qubit.

    Generating squeezed states of the microwave field in a microwave device

    公开(公告)号:GB2570421B

    公开(公告)日:2020-07-22

    申请号:GB201906464

    申请日:2017-10-05

    Applicant: IBM

    Inventor: BALEEGH ABDO

    Abstract: A technique relates to a superconducting microwave device. A left-handed resonator include at least one unit cell. A non-linear dispersive medium is connected to the left-handed resonator, such that one end of the left-handed resonator is connected to the non-linear dispersive medium and an opposite end of the left-handed resonator is connected to a port. The left-handed resonator and the non-linear dispersive medium are configured to output a quantum signal in a squeezed state.

    Generating squeezed states of the microwave field in a microwave device

    公开(公告)号:GB2570421A

    公开(公告)日:2019-07-24

    申请号:GB201906464

    申请日:2017-10-05

    Applicant: IBM

    Inventor: BALEEGH ABDO

    Abstract: A superconducting microwave device (400) is provided. A left-handed resonator (215) include at least one unit cell (205). A non-linear dispersive medium (405) is connected to the left-handed resonator (215), such that one end of the left-handed resonator (215) is connected to the non-linear dispersive medium (405) and an opposite end of the left-handed resonator (215) is connected to a port (410). The left-handed resonator (215) and the non-linear dispersive medium (405) are configured to output a quantum signal in a squeezed state.

    Scalable qubit drive and readout
    38.
    发明专利

    公开(公告)号:GB2569487A

    公开(公告)日:2019-06-19

    申请号:GB201904730

    申请日:2017-11-09

    Applicant: IBM

    Abstract: A system for qubit drive and readout comprises a first lossless microwave switch connected to a quantum system. A second lossless microwave switch is connectable to the first lossless microwave switch. A quantum-limited amplifier is connectable to the second lossless microwave switch.

    Microwave combiner and distributer for quantum signals using frequency-division multiplexing

    公开(公告)号:GB2569484A

    公开(公告)日:2019-06-19

    申请号:GB201904667

    申请日:2017-09-05

    Applicant: IBM

    Inventor: BALEEGH ABDO

    Abstract: A technique relates to a superconducting microwave combiner. A first filter through a last filter connects to a first input through a last input, respectively. The first filter through the last filter each has a first passband through a last passband, respectively, such that the first passband through the last passband are each different. A common output is connected to the first input through the last input via the first filter through the last filter.

    Routing quantum signals in the microwave domain using time dependent switching

    公开(公告)号:GB2569483A

    公开(公告)日:2019-06-19

    申请号:GB201904603

    申请日:2017-08-31

    Applicant: IBM

    Inventor: BALEEGH ABDO

    Abstract: A technique relates to configuring a superconducting router. The superconducting router is operated in a first mode. Ports are configured to be in reflection in the first mode in order to reflect a signal. The superconducting router is operated in a second mode. A given pair of the ports is connected together and in transmission in the second mode, such that the signal is permitted to pass between the given pair of the ports.

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