Patents by Inventor Paul I Bunyk
Paul I Bunyk 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: 9355365Abstract: A superconducting integrated circuit may include a magnetic flux transformer having an inner inductive coupling element and an outer inductive coupling element that surrounds the inner inductive coupling element along at least a portion of a length thereof. The magnetic flux transformer may have a coaxial-like geometry such that a mutual inductance between the first inductive coupling element and the second inductive coupling element is sub-linearly proportional to a distance that separates the first inner inductive coupling element from the first outer inductive coupling element. At least one of the first inductive coupling element and the second inductive coupling element may be coupled to a superconducting programmable device, such as a superconducting qubit.Type: GrantFiled: April 17, 2014Date of Patent: May 31, 2016Assignee: D-Wave Systems Inc.Inventors: Andrew J. Berkley, Mark W. Johnson, Paul I. Bunyk
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Patent number: 9335385Abstract: SQUIDs may detect local magnetic fields. SQUIDS of varying sizes, and hence sensitivities may detect different magnitudes of magnetic fields. SQUIDs may be oriented to detect magnetic fields in a variety of orientations, for example along an orthogonal reference frame of a chip or wafer. The SQUIDS may be formed or carried on the same chip or wafer as a superconducting processor (e.g., a superconducting quantum processor). Measurement of magnetic fields may permit compensation, for example allowing tuning of a compensation field via a compensation coil and/or a heater to warm select portions of a system. A SQIF may be implemented as a SQUID employing an unconventional grating structure. Successful fabrication of an operable SQIF may be facilitated by incorporating multiple Josephson junctions in series in each arm of the unconventional grating structure.Type: GrantFiled: August 18, 2014Date of Patent: May 10, 2016Assignee: D-Wave Systems Inc.Inventors: Trevor Michael Lanting, Paul I. Bunyk, Andrew J. Berkley, Richard G. Harris, Sergey V. Uchaykin, Andrew Brock Wilson, Mark Johnson
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Publication number: 20160065693Abstract: A computer system employs a network that between a data programming system and one or more superconducting programmable devices of a superconducting processor chip. Routers on the network, such as first-, second- and third-stage routers direct communications with the superconducting programmable devices. A superconducting memory register may load data signals received from a first-stage router into corresponding superconducting programmable devices. The system may employ additional superconducting chips, first-, second- or third-stage routers.Type: ApplicationFiled: January 23, 2014Publication date: March 3, 2016Applicant: D-WAVE SYSTEMS INC.Inventors: Geordie Rose, Paul I. Bunyk
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Publication number: 20150379418Abstract: Apparatus and methods enable active compensation for unwanted discrepancies in the superconducting elements of a quantum processor. A qubit may include a primary compound Josephson junction (CJJ) structure, which may include at least a first secondary CJJ structure to enable compensation for Josephson junction asymmetry in the primary CJJ structure. A qubit may include a series LC-circuit coupled in parallel with a first CJJ structure to provide a tunable capacitance. A qubit control system may include means for tuning inductance of a qubit loop, for instance a tunable coupler inductively coupled to the qubit loop and controlled by a programming interface, or a CJJ structure coupled in series with the qubit loop and controlled by a programming interface.Type: ApplicationFiled: September 4, 2015Publication date: December 31, 2015Inventors: Richard G. Harris, Andrew J. Berkley, Jan Johansson, Mark Johnson, Mohammad Amin, Paul I. Bunyk
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Publication number: 20150346291Abstract: SQUIDs may detect local magnetic fields. SQUIDS of varying sizes, and hence sensitivities may detect different magnitudes of magnetic fields. SQUIDs may be oriented to detect magnetic fields in a variety of orientations, for example along an orthogonal reference frame of a chip or wafer. The SQUIDS may be formed or carried on the same chip or wafer as a superconducting processor (e.g., a superconducting quantum processor). Measurement of magnetic fields may permit compensation, for example allowing tuning of a compensation field via a compensation coil and/or a heater to warm select portions of a system. A SQIF may be implemented as a SQUID employing an unconventional grating structure. Successful fabrication of an operable SQIF may be facilitated by incorporating multiple Josephson junctions in series in each arm of the unconventional grating structure.Type: ApplicationFiled: August 18, 2014Publication date: December 3, 2015Inventors: Trevor Michael Lanting, Paul I. Bunyk, Andrew J. Berkley, Richard G. Harris, Sergey V. Uchaykin, Andrew Brock Wilson, Mark Johnson
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Publication number: 20150332164Abstract: Analog processors for solving various computational problems are provided. Such analog processors comprise a plurality of quantum devices, arranged in a lattice, together with a plurality of coupling devices. The analog processors further comprise bias control systems each configured to apply a local effective bias on a corresponding quantum device. A set of coupling devices in the plurality of coupling devices is configured to couple nearest-neighbor quantum devices in the lattice. Another set of coupling devices is configured to couple next-nearest neighbor quantum devices. The analog processors further comprise a plurality of coupling control systems each configured to tune the coupling value of a corresponding coupling device in the plurality of coupling devices to a coupling. Such quantum processors further comprise a set of readout devices each configured to measure the information from a corresponding quantum device in the plurality of quantum devices.Type: ApplicationFiled: June 1, 2015Publication date: November 19, 2015Inventors: Alexander Maassen van den Brink, Peter Love, Mohammad H.S. Amin, Geordie Rose, David Grant, Miles F.H. Steininger, Paul I. Bunyk, Andrew J. Berkley
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Patent number: 9152923Abstract: Apparatus and methods enable active compensation for unwanted discrepancies in the superconducting elements of a quantum processor. A qubit may include a primary compound Josephson junction (CJJ) structure, which may include at least a first secondary CJJ structure to enable compensation for Josephson junction asymmetry in the primary CJJ structure. A qubit may include a series LC-circuit coupled in parallel with a first CJJ structure to provide a tunable capacitance. A qubit control system may include means for tuning inductance of a qubit loop, for instance a tunable coupler inductively coupled to the qubit loop and controlled by a programming interface, or a CJJ structure coupled in series with the qubit loop and controlled by a programming interface.Type: GrantFiled: August 2, 2013Date of Patent: October 6, 2015Assignee: D-Wave Systems Inc.Inventors: Richard G. Harris, Andrew J. Berkley, Jan Johansson, Mark Johnson, Mohammad Amin, Paul I. Bunyk
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Patent number: 9069928Abstract: Analog processors for solving various computational problems are provided. Such analog processors comprise a plurality of quantum devices, arranged in a lattice, together with a plurality of coupling devices. The analog processors further comprise bias control systems each configured to apply a local effective bias on a corresponding quantum device. A set of coupling devices in the plurality of coupling devices is configured to couple nearest-neighbor quantum devices in the lattice. Another set of coupling devices is configured to couple next-nearest neighbor quantum devices. The analog processors further comprise a plurality of coupling control systems each configured to tune the coupling value of a corresponding coupling device in the plurality of coupling devices to a coupling. Such quantum processors further comprise a set of readout devices each configured to measure the information from a corresponding quantum device in the plurality of quantum devices.Type: GrantFiled: February 7, 2014Date of Patent: June 30, 2015Assignee: D-Wave Systems Inc.Inventors: Alexander Maassen van den Brink, Peter Love, Mohammad H. S. Amin, Geordie Rose, David Grant, Miles F. H. Steininger, Paul I. Bunyk, Andrew J. Berkley
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Publication number: 20150119252Abstract: Various techniques and apparatus permit fabrication of superconductive circuits. A niobium/aluminum oxide/niobium trilayer may be formed and individual Josephson Junctions (JJs) formed. A protective cap may protect a JJ during fabrication. A hybrid dielectric may be formed. A superconductive integrated circuit may be formed using a subtractive patterning and/or additive patterning. A superconducting metal layer may be deposited by electroplating and/or polished by chemical-mechanical planarization. The thickness of an inner layer dielectric may be controlled by a deposition process. A substrate may include a base of silicon and top layer including aluminum oxide. Depositing of superconducting metal layer may be stopped or paused to allow cooling before completion. Multiple layers may be aligned by patterning an alignment marker in a superconducting metal layer.Type: ApplicationFiled: March 7, 2013Publication date: April 30, 2015Inventors: Eric Ladizinsky, Jeremy P. Hilton, Byong Hyop Oh, Paul I. Bunyk
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Publication number: 20150032994Abstract: Techniques for improving the performance of a quantum processor are described. Some techniques employ improving the processor topology through design and fabrication, reducing intrinsic/control errors, reducing thermally-assisted errors and methods of encoding problems in the quantum processor for error correction.Type: ApplicationFiled: July 24, 2014Publication date: January 29, 2015Inventors: Fabian Ariel Chudak, Christopher B. Rich, Paul I. Bunyk
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Publication number: 20140246763Abstract: Superconductive interconnection structures providing continuous, uninterrupted superconducting signal paths between a superconducting chip and a superconducting chip carrier are described. The superconductive interconnection structures employ superconducting solder bumps and pillars of Under Bump Metal (“UBM”). The superconductive interconnection structures are employed in a two-stage solder bumping process in which the superconducting chip is first bonded to a testing module for screening and then bonded to a chip packaging module for operation. Either the testing module or the chip packaging module, or both, may include a multi-chip module for carrying multiple superconducting chips simultaneously.Type: ApplicationFiled: December 17, 2013Publication date: September 4, 2014Applicant: D-Wave Systems Inc.Inventor: Paul I. Bunyk
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Patent number: 8812066Abstract: SQUIDs may detect local magnetic fields. SQUIDS of varying sizes, and hence sensitivities may detect different magnitudes of magnetic fields. SQUIDs may be oriented to detect magnetic fields in a variety of orientations, for example along an orthogonal reference frame of a chip or wafer. The SQUIDS may be formed or carried on the same chip or wafer as a superconducting processor (e.g., a superconducting quantum processor). Measurement of magnetic fields may permit compensation, for example allowing tuning of a compensation field via a compensation coil and/or a heater to warm select portions of a system. A SQIF may be implemented as a SQUID employing an unconventional grating structure. Successful fabrication of an operable SQIF may be facilitated by incorporating multiple Josephson junctions in series in each arm of the unconventional grating structure.Type: GrantFiled: October 8, 2009Date of Patent: August 19, 2014Assignee: D-Wave Systems Inc.Inventors: Trevor Michael Lanting, Paul I. Bunyk, Andrew J. Berkley, Richard G. Harris, Sergey V. Uchaykin, Andrew Brock Wilson, Mark Johnson
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Publication number: 20140228222Abstract: A superconducting integrated circuit may include a magnetic flux transformer having an inner inductive coupling element and an outer inductive coupling element that surrounds the inner inductive coupling element along at least a portion of a length thereof. The magnetic flux transformer may have a coaxial-like geometry such that a mutual inductance between the first inductive coupling element and the second inductive coupling element is sub-linearly proportional to a distance that separates the first inner inductive coupling element from the first outer inductive coupling element. At least one of the first inductive coupling element and the second inductive coupling element may be coupled to a superconducting programmable device, such as a superconducting qubit.Type: ApplicationFiled: April 17, 2014Publication date: August 14, 2014Applicant: D-WAVE SYSTEMS INC.Inventors: Andrew J. Berkley, Mark W. Johnson, Paul I. Bunyk
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Publication number: 20140229705Abstract: Analog processors for solving various computational problems are provided. Such analog processors comprise a plurality of quantum devices, arranged in a lattice, together with a plurality of coupling devices. The analog processors further comprise bias control systems each configured to apply a local effective bias on a corresponding quantum device. A set of coupling devices in the plurality of coupling devices is configured to couple nearest-neighbor quantum devices in the lattice. Another set of coupling devices is configured to couple next-nearest neighbor quantum devices. The analog processors further comprise a plurality of coupling control systems each configured to tune the coupling value of a corresponding coupling device in the plurality of coupling devices to a coupling. Such quantum processors further comprise a set of readout devices each configured to measure the information from a corresponding quantum device in the plurality of quantum devices.Type: ApplicationFiled: February 7, 2014Publication date: August 14, 2014Applicant: D-Wave Systems Inc.Inventors: Alexander Maassen van den Brink, Peter Love, Mohammad H. S. Amin, Geordie Rose, David Grant, Miles F. H. Steininger, Paul I. Bunyk, Andrew J. Berkley
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Patent number: 8786476Abstract: A superconducting flux digital-to-analog converter includes a superconducting inductor ladder circuit. The ladder circuit includes a plurality of closed superconducting current paths that each includes at least two superconducting inductors coupled in series to form a respective superconducting loop, successively adjacent or neighboring superconducting loops are connected in parallel with each other and share at least one of the superconducting inductors to form a flux divider network. A data signal input structure provides a respective bit of a multiple bit signal to each of the superconducting loops. The data signal input structure may include a set of superconducting quantum interference devices (SQUIDs). The data signal input structure may include a superconducting shift register, for example a single-flux quantum (SFQ) shift register or a flux-based superconducting shift register comprising a number of latching qubits.Type: GrantFiled: December 14, 2011Date of Patent: July 22, 2014Assignee: D-Wave Systems Inc.Inventors: Paul I. Bunyk, Felix Maibaum, Andrew J. Berkley, Thomas Mahon
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Patent number: 8738105Abstract: A superconducting integrated circuit may include a magnetic flux transformer having an inner inductive coupling element and an outer inductive coupling element that surrounds the inner inductive coupling element along at least a portion of a length thereof. The magnetic flux transformer may have a coaxial-like geometry such that a mutual inductance between the first inductive coupling element and the second inductive coupling element is sub-linearly proportional to a distance that separates the first inner inductive coupling element from the first outer inductive coupling element. At least one of the first inductive coupling element and the second inductive coupling element may be coupled to a superconducting programmable device, such as a superconducting qubit.Type: GrantFiled: November 11, 2010Date of Patent: May 27, 2014Assignee: D-Wave Systems Inc.Inventors: Andrew J. Berkley, Mark W. Johnson, Paul I. Bunyk
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Patent number: 8670807Abstract: A computer system employs a network that between a data programming system and one or more superconducting programmable devices of a superconducting processor chip. Routers on the network, such as first-, second- and third-stage routers direct communications with the superconducting programmable devices. A superconducting memory register may load data signals received from a first-stage router into corresponding superconducting programmable devices. The system may employ additional superconducting chips, first-, second- or third-stage routers.Type: GrantFiled: August 18, 2008Date of Patent: March 11, 2014Assignee: D-Wave Systems Inc.Inventors: Geordie Rose, Paul I. Bunyk
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Patent number: 8611974Abstract: A switching cell for a demultiplexer circuit includes a superconducting input signal path, at least two superconducting output signal paths, and transformers located between an intersection node and respective ends of the output signal paths. Flux applied via the transformers can influence which direction a signal propagates. The switching cell may also include power input nodes. Switching cells may be arranged in various configurations, for example a binary tree or H-tree. A superconducting inductor ladder circuit can perform a digital-to-analog conversion. Flux storage structures may be used with individual switching cells. Latching qubits may be employed. Buffer rows of switching cells may be used to reduce or eliminate cascade error.Type: GrantFiled: June 2, 2009Date of Patent: December 17, 2013Assignee: D-Wave Systems Inc.Inventors: Felix Maibaum, Paul I. Bunyk, Thomas Mahon
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Patent number: 8604944Abstract: Systems, methods and apparatus for a scalable quantum processor architecture. A quantum processor is locally programmable by providing a memory register with a signal embodying device control parameter(s), converting the signal to an analog signal; and administering the analog signal to one or more programmable devices.Type: GrantFiled: September 8, 2011Date of Patent: December 10, 2013Assignee: D-Wave Systems Inc.Inventors: Andrew J. Berkley, Paul I. Bunyk, Geordie Rose
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Publication number: 20130313526Abstract: Apparatus and methods enable active compensation for unwanted discrepancies in the superconducting elements of a quantum processor. A qubit may include a primary compound Josephson junction (CJJ) structure, which may include at least a first secondary CJJ structure to enable compensation for Josephson junction asymmetry in the primary CJJ structure. A qubit may include a series LC-circuit coupled in parallel with a first CJJ structure to provide a tunable capacitance. A qubit control system may include means for tuning inductance of a qubit loop, for instance a tunable coupler inductively coupled to the qubit loop and controlled by a programming interface, or a CJJ structure coupled in series with the qubit loop and controlled by a programming interface.Type: ApplicationFiled: August 2, 2013Publication date: November 28, 2013Applicant: D-Wave Systems Inc.Inventors: Richard G. Harris, Andrew J. Berkley, Jan Johansson, Mark Johnson, Mohammad Amin, Paul I. Bunyk