Patents by Inventor Baleegh Abdo

Baleegh Abdo 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).

  • Four-port circulator with frequency conversion based on nondegenerate three waving mixing josephson devices
    Patent number: 10230038
    Abstract: A technique relates to a superconducting device. A first mixing device has a first mixing port and a second mixing port. A second mixing device has another first mixing port and another second mixing port. The first and second mixing devices are superconducting nondegenerate three-wave mixing devices. The first mixing port and the another first mixing port are configured to couple to a first coupler. The second mixing port and the another second mixing port are configured to couple to a second coupler.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: March 12, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • High fidelity threshold detection of single microwave photons using a quantum non-demolition photon detector
    Patent number: 10210460
    Abstract: A technique relates to a microwave detection device. A quantum non-demolition microwave photon detector is connected to a quadrature microwave hybrid coupler connected. A dispersive nonlinear element is coupled to the quadrature microwave hybrid coupler.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: February 19, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • Driving the common-mode of a Josephson parametric converter using a short-circuited coplanar stripline
    Patent number: 10211798
    Abstract: Techniques relate to an on-chip Josephson parametric converter. A Josephson ring modulator includes four nodes. A lossless on-chip flux line is capacitively coupled to two adjacent nodes of the four nodes of the Josephson ring modulator. The lossless on-chip flux line has an input port configured to receive a pump drive signal that couples differentially to the two adjacent nodes of the of the Josephson ring modulator. The pump drive signal thereby excites a common mode of the on-chip Josephson parametric converter.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: February 19, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • MICROWAVE COMBINER AND DISTRIBUTER FOR QUANTUM SIGNALS USING FREQUENCY-DIVISION MULTIPLEXING
    Publication number: 20190044635
    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.
    Type: Application
    Filed: October 8, 2018
    Publication date: February 7, 2019
    Inventor: BALEEGH ABDO
  • Weakly tunable qubit based on two coupled disparate transmons
    Patent number: 10176432
    Abstract: A technique relates to providing a superconducting quantum device. A fixed frequency transmon qubit is provided. A tunable frequency transmon qubit is provided. The fixed frequency transmon qubit is coupled to the tunable frequency transmon qubit to form a single qubit.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: January 8, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Baleegh Abdo, Jay Gambetta, Jared B. Hertzberg, Easwar Magesan
  • Scalable qubit drive and readout
    Patent number: 10171077
    Abstract: A technique relates to qubit drive and readout. A first lossless microwave switch is 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.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: January 1, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Baleegh Abdo, Jerry M. Chow
  • Selective isolation of frequency multiplexed microwave signals using cascading multi-path interferometric josephson isolators with nonoverlapping bandwidths
    Patent number: 10169722
    Abstract: A cascading selective microwave isolator (cascade) includes a set of Josephson devices, each Josephson device in the set having a corresponding operating bandwidth of microwave frequencies. Different operating bandwidths have different corresponding center frequencies. A series coupling is formed between first Josephson device from the set and an nth Josephson device from the set. The series coupling causes the first Josephson device to isolate a signal at a first frequency from a frequency multiplexed microwave signal (multiplexed signal) in a first signal flow direction through the series coupling and the nth Josephson device to isolate a signal of an nth frequency in a second signal flow direction through the series, where the second signal flow direction is opposite of the first signal flow direction.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: January 1, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • Microwave combiner and distributer for quantum signals using frequency-division multiplexing
    Patent number: 10164724
    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.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: December 25, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • DRIVING THE COMMON-MODE OF A JOSEPHSON PARAMETRIC CONVERTER USING A SHORT-CIRCUITED COPLANAR STRIPLINE
    Publication number: 20180351521
    Abstract: Techniques relate to an on-chip Josephson parametric converter. A Josephson ring modulator includes four nodes. A lossless on-chip flux line is capacitively coupled to two adjacent nodes of the four nodes of the Josephson ring modulator. The lossless on-chip flux line has an input port configured to receive a pump drive signal that couples differentially to the two adjacent nodes of the of the Josephson ring modulator. The pump drive signal thereby excites a common mode of the on-chip Josephson parametric converter.
    Type: Application
    Filed: August 8, 2018
    Publication date: December 6, 2018
    Inventor: Baleegh ABDO
  • Quantum limited josephson amplifier with spatial separation between spectrally degenerate signal and idler modes
    Patent number: 10141928
    Abstract: A technique relates to a quantum-limited microwave amplifier. A Josephson ring modulator (JRM) is connected to a first lumped-element resonator. The first lumped-element resonator includes one or more first lumped elements. A second lumped-element resonator is connected to the JRM, and the second lumped-element resonator includes one or more second lumped elements. The JRM, the first lumped-element resonator, and the second-lumped element resonator form a Josephson parametric converter (JPC). The one or more first lumped elements and the one or more second lumped elements have a value that is the same, thereby configuring the JPC to be spectrally degenerate.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: November 27, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • SUM FREQUENCY GENERATOR IN THE MICROWAVE DOMAIN FOR QUANTUM COMMUNICATION AND COMPUTATION APPLICATIONS
    Publication number: 20180335683
    Abstract: A technique relates to a circuit for a sum frequency generator. A first resonator is connected to a Josephson ring modulator (JRM), and the first resonator is configured to receive a first photon at a first frequency. A second resonator is connected to the JRM, and the second resonator is configured to have a first harmonic and no second harmonic. The second resonator is configured to receive a second photon at a second frequency, and the first resonator is configured to output an up-converted photon. The up-converted photon has an up-converted frequency that is a sum of the first frequency and the second frequency.
    Type: Application
    Filed: July 30, 2018
    Publication date: November 22, 2018
    Inventor: BALEEGH ABDO
  • Integrated drive and readout circuit for superconducting qubits
    Patent number: 10133985
    Abstract: Embodiments of the present invention are directed to an integrated drive and readout circuit assembly. Directional couplers are configured to connect to qubit-resonator systems. Diplexers are coupled to the directional couplers. A microwave signal combiner is coupled to the diplexers.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: November 20, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • Quantum nondemolition microwave photon counter based on the cross-kerr nonlinearity of a josephson junction embedded in a superconducting circuit
    Patent number: 10127500
    Abstract: A technique relates to a microwave device. A pump resonator, at a first pump resonator end, is connected to both a dispersive nonlinear element and a first stub. The pump resonator, at a second pump resonator end, is capacitively coupled to a pump port, where the first stub is terminated in an open circuit. A quantum signal resonator, at a first quantum signal resonator end, is connected to both the dispersive nonlinear element and a second stub. The quantum signal resonator, at a second signal resonator end, is capacitively coupled to a signal port, where the second stub is connected to ground.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: November 13, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • ISOLATOR BASED ON NONDEGENERATE THREE-WAVING MIXING JOSEPHSON DEVICES
    Publication number: 20180323364
    Abstract: A technique relates to a superconducting device. A gyrator includes a first mixing device coupled to a second mixing device. A lumped-element resistor is connected in parallel to the gyrator.
    Type: Application
    Filed: November 15, 2017
    Publication date: November 8, 2018
    Inventor: Baleegh ABDO
  • Sum frequency generator in the microwave domain for quantum communication and computation applications
    Patent number: 10108071
    Abstract: A technique relates to a circuit for a sum frequency generator. A first resonator is connected to a Josephson ring modulator (JRM), and the first resonator is configured to receive a first photon at a first frequency. A second resonator is connected to the JRM, and the second resonator is configured to have a first harmonic and no second harmonic. The second resonator is configured to receive a second photon at a second frequency, and the first resonator is configured to output an up-converted photon. The up-converted photon has an up-converted frequency that is a sum of the first frequency and the second frequency.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 23, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • FOUR-PORT CIRCULATOR WITH FREQUENCY CONVERSION BASED ON NONDEGENERATE THREE WAVING MIXING JOSEPHSON DEVICES
    Publication number: 20180301612
    Abstract: A technique relates to a superconducting device. A first mixing device has a first mixing port and a second mixing port. A second mixing device has another first mixing port and another second mixing port. The first and second mixing devices are superconducting nondegenerate three-wave mixing devices. The first mixing port and the another first mixing port are configured to couple to a first coupler. The second mixing port and the another second mixing port are configured to couple to a second coupler.
    Type: Application
    Filed: April 18, 2017
    Publication date: October 18, 2018
    Inventor: BALEEGH ABDO
  • FOUR-PORT CIRCULATOR WITH FREQUENCY CONVERSION BASED ON NONDEGENERATE THREE WAVING MIXING JOSEPHSON DEVICES
    Publication number: 20180301613
    Abstract: A technique relates to a superconducting device. A first mixing device has a first mixing port and a second mixing port. A second mixing device has another first mixing port and another second mixing port. The first and second mixing devices are superconducting nondegenerate three-wave mixing devices. The first mixing port and the another first mixing port are configured to couple to a first coupler. The second mixing port and the another second mixing port are configured to couple to a second coupler.
    Type: Application
    Filed: November 15, 2017
    Publication date: October 18, 2018
    Inventor: Baleegh ABDO
  • Lossless variable transmission reflection switch controlled by the phase of a microwave drive
    Patent number: 10103730
    Abstract: A technique relates to a microwave switch. A first nondegenerate device includes a first port and a second port. A second nondegenerate device includes another first port and another second port, the second port being coupled to the another second port, where the first nondegenerate device and the second nondegenerate device are configured to receive a phase difference in microwave drives. A first input/output port is coupled to the first port and the another first port. A second input/output port is coupled to the first port and the another first port, where communication between the first input/output port and the second input/output port is based on the phase difference.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: October 16, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • Josephson-coupled resonator amplifier (JRA)
    Patent number: 10097143
    Abstract: A Josephson-coupled resonator amplifier is provided. The Josephson-coupled resonator amplifier includes a first and a second resonator, each formed from respective lumped-element capacitance and respective lumped-element inductance. The Josephson-coupled resonator amplifier further includes one or more Josephson junctions coupling the first resonator to the second resonator, whereby a superconducting loop is formed from at least the lumped-element inductance of the resonators and the one or more Josephson junctions.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: October 9, 2018
    Assignee: International Business Machines Corporation
    Inventor: Baleegh Abdo
  • INCORPORATING ARRAYS OF JOSEPHSON JUNCTIONS IN A JOSEPHSON JUNCTION RING MODULATOR IN A JOSEPHSON PARAMETRIC CONVERTER
    Publication number: 20180287041
    Abstract: A Josephson parametric converter is provided. The Josephson parametric converter includes a multi-Josephson junction ring modulator having arrays of Josephson junctions arranged in a ring configuration with ring nodes inter-dispersed between the arrays and a center node inter-connecting the ring nodes. The Josephson parametric also includes resonators formed from capacitors that shunt the multi-Josephson junction ring modulator and enable respective modes of the Josephson parametric converter.
    Type: Application
    Filed: June 13, 2018
    Publication date: October 4, 2018
    Inventor: Baleegh Abdo