Patents by Inventor Anirudh Narla
Anirudh Narla has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11737376Abstract: A superconducting device includes two nodes and a Josephson junction coupled between the two nodes, wherein the Josephson junction is characterized by a superconducting phase difference, ?, wherein the superconducting device has a potential that varies as a function of the superconducting phase difference, ?, and has a single potential well. The potential has a non-zero cubic term and quartic term is zero. The Josephson junction may be a single small Josephson junction. The superconducting device may include a superconducting ring connected between the two nodes. The superconducting ring may include a first ring portion with a plurality of large Josephson junctions connected in series. The superconducting ring may also include a second ring portion that includes the single small Josephson junction in parallel with the plurality of large Josephson junctions between the two nodes.Type: GrantFiled: December 11, 2018Date of Patent: August 22, 2023Assignee: Yale UniversityInventors: Nicholas Frattini, Uri Vool, Shyam Shankar, Anirudh Narla, Katrina Sliwa, Michel Devoret, Volodymyr Sivak
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Patent number: 11271533Abstract: A wireless Josephson-junction-based amplifier is described that provides improved tunability and increased control over both a quality factor Q and participation ratio p of the amplifier. The device may be fabricated on a chip and mounted in a waveguide. No wire bonding between the amplifier and coaxial cables or a printed circuit board is needed. At least one antenna on the chip may be used to couple energy between the waveguide and wireless JBA. The amplifier is capable of gains greater than 25 dB.Type: GrantFiled: March 7, 2018Date of Patent: March 8, 2022Assignee: Yale UniversityInventors: Anirudh Narla, Katrina Sliwa, Michael Hatridge, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf, III, Michel Devoret
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Publication number: 20210021245Abstract: A superconducting device includes two nodes and a Josephson junction coupled between the two nodes, wherein the Josephson junction is characterized by a superconducting phase difference, ?, wherein the superconducting device has a potential that varies as a function of the superconducting phase difference, ?, and has a single potential well. The potential has a non-zero cubic term and quartic term is zero. The Josephson junction may be a single small Josephson junction. The superconducting device may include a superconducting ring connected between the two nodes. The superconducting ring may include a first ring portion with a plurality of large Josephson junctions connected in series. The superconducting ring may also include a second ring portion that includes the single small Josephson junction in parallel with the plurality of large Josephson junctions between the two nodes.Type: ApplicationFiled: December 11, 2018Publication date: January 21, 2021Applicant: Yale UniversityInventors: Nicholas Frattini, Uri Vool, Shyam Shankar, Anirudh Narla, Katrina Sliwa, Michel Devoret, Volodymyr Sivak
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Patent number: 10693566Abstract: A wireless Josephson-junction-based parametric converter is described. The converter may be formed on a substrate with antennas that pump are configured to wirelessly receive pump, signal and idler frequencies and couple the received frequencies to the converter's circuitry. Capacitors may also be fabricated on the same substrate and sized to tune operation of the converter to desired frequencies. The converter may be coupled directly to microwave waveguides, and may be tuned to different signal frequencies by applying magnetic flux to the converter circuitry.Type: GrantFiled: April 15, 2016Date of Patent: June 23, 2020Assignee: Yale UniversityInventors: Katrina Sliwa, Michael Hatridge, Anirudh Narla, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf, III, Michel Devoret
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Patent number: 10461385Abstract: According to some aspects, a circuit is provided comprising a plurality of Josephson junctions arranged in series in a loop, at least one magnetic element producing magnetic flux through the loop, a plurality of superconducting resonators, each resonator coupled to the loop between a different neighboring pair of Josephson junctions of the plurality of Josephson junctions, a plurality of ports, each port coupled to at least one of the plurality of resonators at ends of the resonators opposite to ends at which the resonators are coupled to the loop, and at least one controller configured to provide input energy to each of the plurality of ports that causes the circuit to function as a circulator between the plurality of ports.Type: GrantFiled: February 26, 2016Date of Patent: October 29, 2019Assignee: Yale UniversityInventors: Katrina Sliwa, Michael Hatridge, Anirudh Narla, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf, III, Michel Devoret
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Patent number: 10404214Abstract: According to some aspects, a quantum circuit is provided including a plurality of non-linear circuit elements coupled together in series and in parallel, such that at least two of the circuit elements are coupled together in series and at least two of the circuit elements are coupled together in parallel, wherein the quantum circuit is configured to act as an amplifier.Type: GrantFiled: February 26, 2016Date of Patent: September 3, 2019Assignee: Yale UniversityInventors: László J. Szöcs, Anirudh Narla, Michael Hatridge, Katrina Sliwa, Shyam Shankar, Luigi Frunzio, Michel Devoret
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Publication number: 20180198427Abstract: A wireless Josephson-junction-based amplifier is described that provides improved tunability and increased control over both a quality factor Q and participation ratio p of the amplifier. The device may be fabricated on a chip and mounted in a waveguide. No wire bonding between the amplifier and coaxial cables or a printed circuit board is needed. At least one antenna on the chip may be used to couple energy between the waveguide and wireless JBA. The amplifier is capable of gains greater than 25 dB.Type: ApplicationFiled: March 7, 2018Publication date: July 12, 2018Applicant: Yale UniversityInventors: Anirudh Narla, Katrina Sliwa, Michael Hatridge, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf, III, Michel Devoret
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Publication number: 20180138987Abstract: A wireless Josephson-junction-based parametric converter is described. The converter may be formed on a substrate with antennas that pump are configured to wirelessly receive pump, signal and idler frequencies and couple the received frequencies to the converter's circuitry. Capacitors may also be fabricated on the same substrate and sized to tune operation of the converter to desired frequencies. The converter may be coupled directly to microwave waveguides, and may be tuned to different signal frequencies by applying magnetic flux to the converter circuitry.Type: ApplicationFiled: April 15, 2016Publication date: May 17, 2018Applicant: Yale UniversityInventors: Katrina Sliwa, Michael Hatridge, Anirudh Narla, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf, III, Michel Devoret
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Patent number: 9948254Abstract: A wireless Josephson-junction-based amplifier is described that provides improved tunability and increased control over both a quality factor Q and participation ratio p of the amplifier. The device may be fabricated on a chip and mounted in a waveguide. No wire bonding between the amplifier and coaxial cables or a printed circuit board is needed. At least one antenna on the chip may be used to couple energy between the waveguide and wireless JBA. The amplifier is capable of gains greater than 25 dB.Type: GrantFiled: February 20, 2015Date of Patent: April 17, 2018Assignee: Yale UniversityInventors: Anirudh Narla, Katrina Sliwa, Michael Hatridge, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf, III, Michel Devoret
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Publication number: 20180054165Abstract: According to some aspects, a quantum circuit is provided including a plurality of non-linear circuit elements coupled together in series and in parallel, such that at least two of the circuit elements are coupled together in series and at least two of the circuit elements are coupled together in parallel, wherein the quantum circuit is configured to act as an amplifier.Type: ApplicationFiled: February 26, 2016Publication date: February 22, 2018Applicant: Yale UniversityInventors: László J. Szöcs, Anirudh Narla, Michael Hatridge, Katrina Sliwa, Shyam Shankar, Luigi Frunzio, Michel Devoret
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Publication number: 20180040935Abstract: According to some aspects, a circuit is provided comprising a plurality of Josephson junctions arranged in series in a loop, at least one magnetic element producing magnetic flux through the loop, a plurality of superconducting resonators, each resonator coupled to the loop between a different neighboring pair of Josephson junctions of the plurality of Josephson junctions, a plurality of ports, each port coupled to at least one of the plurality of resonators at ends of the resonators opposite to ends at which the resonators are coupled to the loop, and at least one controller configured to provide input energy to each of the plurality of ports that causes the circuit to function as a circulator between the plurality of ports.Type: ApplicationFiled: February 26, 2016Publication date: February 8, 2018Applicant: Yale UniversityInventors: Katrina Sliwa, Michael Hatridge, Anirudh Narla, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf III, Michel Devoret
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Publication number: 20150241481Abstract: A wireless Josephson-junction-based amplifier is described that provides improved tunability and increased control over both a quality factor Q and participation ratio p of the amplifier. The device may be fabricated on a chip and mounted in a waveguide. No wire bonding between the amplifier and coaxial cables or a printed circuit board is needed. At least one antenna on the chip may be used to couple energy between the waveguide and wireless JBA. The amplifier is capable of gains greater than 25 dB.Type: ApplicationFiled: February 20, 2015Publication date: August 27, 2015Applicant: Yale UniversityInventors: Anirudh Narla, Katrina Sliwa, Michael Hatridge, Shyam Shankar, Luigi Frunzio, Robert J. Schoelkopf, III, Michel Devoret