Patents by Inventor MICAH JOHN ATMAN STOUTIMORE
MICAH JOHN ATMAN STOUTIMORE 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: 11616187Abstract: Test structures and methods for superconducting bump bond electrical characterization are used to verify the superconductivity of bump bonds that electrically connect two superconducting integrated circuit chips fabricated using a flip-chip process, and can also ascertain the self-inductance of bump bond(s) between chips. The structures and methods leverage a behavioral property of superconducting DC SQUIDs to modulate a critical current upon injection of magnetic flux in the SQUID loop, which behavior is not present when the SQUID is not superconducting, by including bump bond(s) within the loop, which loop is split among chips. The sensitivity of the bump bond superconductivity verification is therefore effectively perfect, independent of any multi-milliohm noise floor that may exist in measurement equipment.Type: GrantFiled: February 5, 2021Date of Patent: March 28, 2023Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Aurelius L. Graninger, Joel D. Strand, Micah John Atman Stoutimore, Zachary Kyle Keane, Jeffrey David Hartman, Justin C. Hackley
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Publication number: 20220357371Abstract: One example includes a flux switch system. The system includes an input stage configured to provide an interrogation pulse. The system also includes a plurality of flux loops configured to receive an input current. Each of the flux loops includes a Josephson junction configured to trigger to generate an output pulse in response to a first polarity of the input current and to not trigger to generate no output pulse in response to a second polarity of the input current opposite the first polarity. The system further includes an output stage configured to propagate the output pulse to an output of the flux switch system.Type: ApplicationFiled: May 10, 2021Publication date: November 10, 2022Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Cody James Ballard, Andrew Hostetler Miklich, Micah John Atman Stoutimore, Robert Miller, Joel D. Strand, Kurt Pleim
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Patent number: 11486910Abstract: One example includes a flux switch system. The system includes an input stage configured to provide an interrogation pulse. The system also includes a plurality of flux loops configured to receive an input current. Each of the flux loops includes a Josephson junction configured to trigger to generate an output pulse in response to a first polarity of the input current and to not trigger to generate no output pulse in response to a second polarity of the input current opposite the first polarity. The system further includes an output stage configured to propagate the output pulse to an output of the flux switch system.Type: GrantFiled: May 10, 2021Date of Patent: November 1, 2022Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Cody James Ballard, Andrew Hostetler Miklich, Micah John Atman Stoutimore, Robert Miller, Joel D. Strand, Kurt Pleim
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Publication number: 20210257532Abstract: Test structures and methods for superconducting bump bond electrical characterization are used to verify the superconductivity of bump bonds that electrically connect two superconducting integrated circuit chips fabricated using a flip-chip process, and can also ascertain the self-inductance of bump bond(s) between chips. The structures and methods leverage a behavioral property of superconducting DC SQUIDs to modulate a critical current upon injection of magnetic flux in the SQUID loop, which behavior is not present when the SQUID is not superconducting, by including bump bond(s) within the loop, which loop is split among chips. The sensitivity of the bump bond superconductivity verification is therefore effectively perfect, independent of any multi-milliohm noise floor that may exist in measurement equipment.Type: ApplicationFiled: February 5, 2021Publication date: August 19, 2021Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: AURELIUS L. GRANINGER, JOEL D. STRAND, MICAH JOHN ATMAN STOUTIMORE, ZACHARY KYLE KEANE, JEFFREY DAVID HARTMAN, JUSTIN C. HACKLEY
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Patent number: 10950778Abstract: Test structures and methods for superconducting bump bond electrical characterization are used to verify the superconductivity of bump bonds that electrically connect two superconducting integrated circuit chips fabricated using a flip-chip process, and can also ascertain the self-inductance of bump bond(s) between chips. The structures and methods leverage a behavioral property of superconducting DC SQUIDs to modulate a critical current upon injection of magnetic flux in the SQUID loop, which behavior is not present when the SQUID is not superconducting, by including bump bond(s) within the loop, which loop is split among chips. The sensitivity of the bump bond superconductivity verification is therefore effectively perfect, independent of any multi-milliohm noise floor that may exist in measurement equipment.Type: GrantFiled: January 7, 2019Date of Patent: March 16, 2021Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Aurelius L. Graninger, Joel D. Strand, Micah John Atman Stoutimore, Zachary Kyle Keane, Jeffrey David Hartman, Justin C. Hackley
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Publication number: 20200220064Abstract: Test structures and methods for superconducting bump bond electrical characterization are used to verify the superconductivity of bump bonds that electrically connect two superconducting integrated circuit chips fabricated using a flip-chip process, and can also ascertain the self-inductance of bump bond(s) between chips. The structures and methods leverage a behavioral property of superconducting DC SQUIDs to modulate a critical current upon injection of magnetic flux in the SQUID loop, which behavior is not present when the SQUID is not superconducting, by including bump bond(s) within the loop, which loop is split among chips. The sensitivity of the bump bond superconductivity verification is therefore effectively perfect, independent of any multi-milliohm noise floor that may exist in measurement equipment.Type: ApplicationFiled: January 7, 2019Publication date: July 9, 2020Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: AURELIUS L. GRANINGER, JOEL D. STRAND, MICAH JOHN ATMAN STOUTIMORE, ZACHARY KYLE KEANE, JEFFREY DAVID HARTMAN, JUSTIN C. HACKLEY
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Patent number: 10574251Abstract: One example includes a Josephson analog-to-digital converter (ADC) system. The system includes a control line inductively coupled to an input signal line on which an input analog signal is provided. The input signal line can be inductively coupled to the control line to propagate an induced input current that is based on the input analog signal on the control line. The system also includes at least one Josephson transmission line (JTL) stage that is biased via a DC bias current and is configured to generate an output pulse in response to the induced input current and the DC bias current exceeding a predetermined threshold current associated with the at least one JTL stage.Type: GrantFiled: March 1, 2019Date of Patent: February 25, 2020Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Micah John Atman Stoutimore, Timothy A. Manning, Mark E. Nowakowski, Alexander Marakov
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Patent number: 10540603Abstract: Real-time reconfigurability of quantum object connectivity can be provided with one or more quantum routers that can each be configured as either or both of a single-pole double-throw switch and a cross-point switch. The quantum router includes variable-inductance coupling elements in RF-SQUIDs having inductors transformer-coupled to two control flux lines, one providing a static current and the other providing a dynamic current, the direction of which can be toggled to couple or uncouple quantum objects, such as qubits, based on the dynamic current direction to provide reconfigurable quantum routing.Type: GrantFiled: June 19, 2018Date of Patent: January 21, 2020Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Ofer Naaman, Zachary Kyle Keane, Micah John Atman Stoutimore, David George Ferguson
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Publication number: 20190385088Abstract: Real-time reconfigurability of quantum object connectivity can be provided with one or more quantum routers that can each be configured as either or both of a single-pole double-throw switch and a cross-point switch. The quantum router includes variable-inductance coupling elements in RF-SQUIDs having inductors transformer-coupled to two control flux lines, one providing a static current and the other providing a dynamic current, the direction of which can be toggled to couple or uncouple quantum objects, such as qubits, based on the dynamic current direction to provide reconfigurable quantum routing.Type: ApplicationFiled: June 19, 2018Publication date: December 19, 2019Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: OFER NAAMAN, ZACHARY KYLE KEANE, MICAH JOHN ATMAN STOUTIMORE, DAVID GEORGE FERGUSON
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Patent number: 10353844Abstract: A tunable bus-mediated coupling system is provided that includes a first input port coupled to a first end of a variable inductance coupling element through a first resonator and a second input port coupled to a second end of the variable inductance coupling element through a second resonator. The first input port is configured to be coupled to a first qubit, and the second output port is configured to be coupled to a second qubit. A controller is configured to control the inductance of the variable inductance coupling element between a low inductance state to provide strong coupling between the first qubit and the second qubit and a high inductance state to provide isolation between the first qubit and the second qubit.Type: GrantFiled: July 3, 2018Date of Patent: July 16, 2019Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Ofer Naaman, Zachary Kyle Keane, Micah John Atman Stoutimore, David George Ferguson
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Publication number: 20180336153Abstract: A tunable bus-mediated coupling system is provided that includes a first input port coupled to a first end of a variable inductance coupling element through a first resonator and a second input port coupled to a second end of the variable inductance coupling element through a second resonator. The first input port is configured to be coupled to a first qubit, and the second output port is configured to be coupled to a second qubit. A controller is configured to control the inductance of the variable inductance coupling element between a low inductance state to provide strong coupling between the first qubit and the second qubit and a high inductance state to provide isolation between the first qubit and the second qubit.Type: ApplicationFiled: July 3, 2018Publication date: November 22, 2018Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: OFER NAAMAN, ZACHARY KYLE KEANE, MICAH JOHN ATMAN STOUTIMORE, DAVID GEORGE FERGUSON