Josephson traveling wave parametric amplifier device with sideband suppression
AssigneeInternational Business Machines Corporation
InventorsCorrado P Mancini, David Lokken-Toyli
Life of this patent
Estimating the term…
Abstract
Devices and/or computer-implemented methods to facilitate a Josephson traveling wave parametric amplifier (JTWPA) device with sideband suppression are provided. According to an embodiment, a device can comprise a plurality of unit cells including at least one Josephson junction and a shunt capacitor. The device can further comprise a plurality of first dispersion resonators coupled to the plurality of unit cells at a first interval. The plurality of first dispersion resonators suppress generation of at least one of a third order harmonic of a pump tone applied to the device, a third order intermodulation product, or a fifth order intermodulation product.
Claims25
A device, comprising:
- a plurality of unit cells including at least one Josephson junction and a shunt capacitor;
- and
- a plurality of first dispersion resonators coupled to the plurality of unit cells at a first interval, wherein the plurality of first dispersion resonators suppress generation of at least one of a third order harmonic of a single pump tone applied to the device, a third order intermodulation product of the single pump tone applied to the device, or a fifth order intermodulation product of the single pump tone applied to the device.
A computer-implemented method, comprising:
- applying, by a system operatively coupled to a processor, a single pump tone to a Josephson traveling wave parametric amplifier device comprising a plurality of unit cells having at least one Josephson junction and a shunt capacitor;
- and
- suppressing, by the system, generation of at least one of a third order harmonic of the single pump tone, a third order intermodulation product, or a fifth order intermodulation product using a plurality of first dispersion resonators coupled to the plurality of unit cells at a first interval.
A device, comprising:
- a plurality of unit cells including at least one Josephson junction and a shunt capacitor;
- and
- a plurality of first dispersion resonators coupled to the plurality of unit cells at a first interval and operative to generate sideband suppression, and a plurality of second dispersion resonators coupled to the plurality of unit cells at a second interval and operative to amplify quantum signals, and wherein the first plurality of dispersion resonators and the second plurality of dispersion resonators are operatively coupled to a single pump tone.
A computer-implemented method, comprising:
- applying, by a system operatively coupled to a processor, a single pump tone to a Josephson traveling wave parametric amplifier device comprising a plurality of unit cells having at least one Josephson junction and a shunt capacitor;
- and
- generating, by the system, sideband suppression using a plurality of first dispersion resonators coupled to the plurality of unit cells at a first interval.
A device, comprising:
- a first dispersion resonator coupled to a first unit cell of a Josephson traveling wave parametric amplifier device and configured to receive a single pump tone to cause sideband suppression;
- and
- a second dispersion resonator coupled to a second unit cell of the Josephson traveling wave parametric amplifier device and configured to receive the single pump tone to amplify a quantum signal.
Dependencies are inferred from the claim text.