Josephson parametric converter having impedance-matching networks
AssigneeInternational Business Machines Corporation
InventorsCorrado P Mancini, Baleegh Abdo
Life of this patent
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Abstract
One or more systems, devices and/or methods of use provided herein relate to a device that can provide bandwidth and/or saturation power to amplify a plurality of readout frequencies or to convert one or more frequencies. In quantum technology, the one or more systems, devices and/or methods of use provided herein can be employed to simultaneously readout a plurality of qubit resonators. A device can comprise a Josephson parametric converter device comprising a Josephson ring modulator having a pair of nodes, and an impedance matching circuit network operatively connected across the pair of nodes. The device can be separately operable in an amplification mode or in a conversion mode.
Claims25
A device, comprising:
- a Josephson parametric converter (JPC) comprising:
- a Josephson ring modulator (JRM) having nodes respectively between sets of Josephson junctions;
- and
- an impedance matching circuit network operatively connected across a pair of the nodes, wherein the impedance matching circuit network increases a frequency bandwidth of the JPC device.
A method, comprising:
- increasing bandwidth, by a system operatively coupled to a processor, of a Josephson parametric converter (JPC) device comprising a Josephson ring modulator (JRM) nodes respectively between the sets of Josephson junctions, wherein the increasing the bandwidth comprises:
- operatively coupling, by the system, an impedance matching circuit network across a pair of the nodes, wherein the impedance matching circuit network increases a frequency bandwidth of the JPC device.
A system, comprising:
- a processor;
- a chip controlled by the processor;
- and
- a Josephson parametric converter (JPC) device, comprising:
- a Josephson ring modulator (JRM) having sets of Josephson junctions and nodes respectively between the sets of Josephson junctions;
- and
- an impedance matching circuit network operatively connected across a pair of the nodes, wherein the impedance matching circuit network increases a frequency bandwidth of the JPC device.
A device, comprising:
- a Josephson ring modulator (JRM) having a plurality of nodes respectively between sets of Josephson junctions;
- one or more impedance matching circuit networks operatively connected to the JRM via two nodes of the plurality of nodes, wherein the one or more impedance matching circuit networks increase a frequency bandwidth of the device;
- and
- a pumping circuit operatively connected to the JRM.
A device, comprising:
- a plurality of stacked layers;
- a Josephson ring modulator (JRM) arranged at one or more of the stacked layers, wherein nodes of the JRM are oriented at corners of a footprint of the JRM on one of the stacked layers;
- and
- an impedance matching circuit network operatively connected across a pair of the nodes,
- wherein the impedance matching circuit network increases a frequency bandwidth of the device.
Dependencies are inferred from the claim text.