Patents by Inventor Anna Y. Herr
Anna Y. Herr 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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Publication number: 20150094207Abstract: One embodiment describes a memory cell. The memory cell includes a phase hysteretic magnetic Josephson junction (PHMJJ) that is configured to store one of a first binary logic state corresponding to a binary logic-1 state and a second binary logic state corresponding to a binary logic-0 state in response to a write current and to generate a superconducting phase based on the stored digital state. The memory cell also includes at least one Josephson junction having a critical current that is based on the superconducting phase of the PHMJJ and being configured to provide an output corresponding to the stored digital state in response to a read current.Type: ApplicationFiled: October 1, 2013Publication date: April 2, 2015Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Anna Y. Herr, Quentin P. Herr, Ofer Naaman
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Publication number: 20150092465Abstract: One embodiment describes an AC/DC converter system. The system includes a flux-shuttle loop that is inductively coupled with an AC input signal. The system also includes a plurality of Josephson junctions spaced about the flux shuttle loop that are configured to sequentially trigger in response to the AC input signal and to provide a single-flux quantum (SFQ) pulse that moves sequentially around the flux-shuttle loop that results in a DC output signal being provided through an output inductor.Type: ApplicationFiled: October 2, 2013Publication date: April 2, 2015Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Quentin P. Herr, Anna Y. Herr
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Publication number: 20150043273Abstract: One aspect of the present invention includes a Josephson magnetic memory system. The system includes a superconducting electrode that conducts a read current. The system also includes a hysteretic magnetic Josephson junction (HMJJ). The HMJJ can store a binary value and convert superconducting pairs associated with the read current flowing through the HMJJ from a singlet-state to a triplet-state. The system further includes a write circuit magnetically coupled to the HMJJ and configured to write the binary value into the at HMJJ in response to at least one write current and a read circuit configured to determine the binary value stored in the HMJJ in response to application of the read current to the HMJJ.Type: ApplicationFiled: May 31, 2012Publication date: February 12, 2015Inventors: OFER NAAMAN, DONALD L. MILLER, ANNA Y. HERR, NORMAN O. BIRGE
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Patent number: 8928391Abstract: Methods and apparatuses are provided for controlling the state of a qubit. A qubit apparatus includes a qubit and a load coupled to the qubit through a filter. The filter has at least a first pass band and a first stop band. A qubit control is configured to tune the qubit to alter an associated transition frequency of the qubit from a first frequency in the first stop band of the filter to a second frequency in the first pass band of the filter.Type: GrantFiled: July 7, 2011Date of Patent: January 6, 2015Assignee: Northrop Grumman Systems CorporationInventors: Ofer Naaman, Anna Y. Herr
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Patent number: 8489163Abstract: A reciprocal quantum logic (RQL) latch system is provided. The latch system comprises an output portion that retains a state of the latch system, and a bi-stable loop that comprises a set input, a reset input and an output coupled to the output portion. A positive single flux quantum (SFQ) pulse on the set input when the latch system is in a reset state results in providing a SFQ current in the output portion representative of the latch system being in a set state.Type: GrantFiled: August 12, 2011Date of Patent: July 16, 2013Assignee: Northrop Grumman Systems CorporationInventors: Quentin P. Herr, Anna Y. Herr
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Publication number: 20130040818Abstract: A reciprocal quantum logic (RQL) latch system is provided. The latch system comprises an output portion that retains a state of the latch system, and a bi-stable loop that comprises a set input, a reset input and an output coupled to the output portion. A positive single flux quantum (SFQ) pulse on the set input when the latch system is in a reset state results in providing a SFQ current in the output portion representative of the latch system being in a set state.Type: ApplicationFiled: August 12, 2011Publication date: February 14, 2013Inventors: Quentin P. Herr, Anna Y. Herr
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Publication number: 20130009677Abstract: Methods and apparatuses are provided for controlling the state of a qubit. A qubit apparatus includes a qubit and a load coupled to the qubit through a filter. The filter has at least a first pass band and a first stop band. A qubit control is configured to tune the qubit to alter an associated transition frequency of the qubit from a first frequency in the first stop band of the filter to a second frequency in the first pass band of the filter.Type: ApplicationFiled: July 7, 2011Publication date: January 10, 2013Inventors: OFER NAAMAN, Anna Y. Herr
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Patent number: 8270209Abstract: One aspect of the present invention includes a Josephson magnetic random access memory (JMRAM) system. The system includes an array of memory cells arranged in rows and columns. Each of the memory cells includes an HMJJD that is configured to store a digital state corresponding to one of a binary logic-1 state and a binary logic-0 state in response to a word-write current that is provided on a word-write line and a bit-write current that is provided on a bit-write line. The HMJJD is also configured to output the respective digital state in response to a word-read current that is provided on a word-read line and a bit-read current that is provided on a bit-read line.Type: GrantFiled: April 30, 2010Date of Patent: September 18, 2012Assignee: Northrop Grumman Systems CorporationInventors: Anna Y. Herr, Quentin P. Herr
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Publication number: 20110267878Abstract: One aspect of the present invention includes a Josephson magnetic random access memory (JMRAM) system. The system includes an array of memory cells arranged in rows and columns. Each of the memory cells includes an HMJJD that is configured to store a digital state corresponding to one of a binary logic-1 state and a binary logic-0 state in response to a word-write current that is provided on a word-write line and a bit-write current that is provided on a bit-write line. The HMJJD is also configured to output the respective digital state in response to a word-read current that is provided on a word-read line and a bit-read current that is provided on a bit-read line.Type: ApplicationFiled: April 30, 2010Publication date: November 3, 2011Inventors: Anna Y. Herr, Quentin P. Herr
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Patent number: 7868645Abstract: In one embodiment, the disclosure relates to a single flux quantum (SFQ) signal transmission line powered by an AC power source. The AC power source supplies power to a transformer having a primary winding and a secondary winding. The primary winding receives the AC signal and the secondary winding communicates the signal to the SFQ transmission line. The transmission line can optionally include an input filter circuit for receiving the incoming SFQ pulse. The filter circuit can have a resistor and an inductor connected in parallel. In an alternative arrangement, the filter circuit can comprise of an inductor. A first Josephson junction can be connected to the filter circuit and to the secondary winding. The Josephson junction triggers in response to the incoming SFQ pulse and regenerates a pulse signal in response to a power discharge from the secondary winding.Type: GrantFiled: May 5, 2010Date of Patent: January 11, 2011Assignee: Northrop Grumman Systems CorporationInventors: Quentin P. Herr, James E. Baumgardner, Anna Y. Herr
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Patent number: 7852106Abstract: In one embodiment, the disclosure relates to a single flux quantum (SFQ) signal transmission line powered by an AC power source. The AC power source supplies power to a transformer having a primary winding and a secondary winding. The primary winding receives the AC signal and the secondary winding communicates the signal to the SFQ transmission line. The transmission line can optionally include an input filter circuit for receiving the incoming SFQ pulse. The filter circuit can have a resistor and an inductor connected in parallel. In an alternative arrangement, the filter circuit can comprise of an inductor. A first Josephson junction can be connected to the filter circuit and to the secondary winding. The Josephson junction triggers in response to the incoming SFQ pulse and regenerates a pulse signal in response to a power discharge from the secondary winding.Type: GrantFiled: May 4, 2010Date of Patent: December 14, 2010Assignee: Northrop Grumman Systems CorporationInventors: Quentin P. Herr, James E. Baumgardner, Anna Y. Herr
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Publication number: 20100237899Abstract: In one embodiment, the disclosure relates to a single flux quantum (SFQ) signal transmission line powered by an AC power source. The AC power source supplies power to a transformer having a primary winding and a secondary winding. The primary winding receives the AC signal and the secondary winding communicates the signal to the SFQ transmission line. The transmission line can optionally include an input filter circuit for receiving the incoming SFQ pulse. The filter circuit can have a resistor and an inductor connected in parallel. In an alternative arrangement, the filter circuit can comprise of an inductor. A first Josephson junction can be connected to the filter circuit and to the secondary winding. The Josephson junction triggers in response to the incoming SFQ pulse and regenerates a pulse signal in response to a power discharge from the secondary winding.Type: ApplicationFiled: May 5, 2010Publication date: September 23, 2010Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Quentin P. Herr, James E. Baumgardner, Anna Y. Herr
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Patent number: 7782077Abstract: In one embodiment, the disclosure relates to a single flux quantum (SFQ) signal transmission line powered by an AC power source. The AC power source supplies power to a transformer having a primary winding and a secondary winding. The primary winding receives the AC signal and the secondary winding communicates the signal to the SFQ transmission line. The transmission line can optionally include an input filter circuit for receiving the incoming SFQ pulse. The filter circuit can have a resistor and an inductor connected in parallel. In an alternative arrangement, the filter circuit can comprise of an inductor. A first Josephson junction can be connected to the filter circuit and to the secondary winding. The Josephson junction triggers in response to the incoming SFQ pulse and regenerates a pulse signal in response to a power discharge from the secondary winding.Type: GrantFiled: May 7, 2009Date of Patent: August 24, 2010Assignee: Northrop Grumman Systems CorporationInventors: Quentin P. Herr, James E. Baumgardner, Anna Y. Herr
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Publication number: 20100207657Abstract: In one embodiment, the disclosure relates to a single flux quantum (SFQ) signal transmission line powered by an AC power source. The AC power source supplies power to a transformer having a primary winding and a secondary winding. The primary winding receives the AC signal and the secondary winding communicates the signal to the SFQ transmission line. The transmission line can optionally include an input filter circuit for receiving the incoming SFQ pulse. The filter circuit can have a resistor and an inductor connected in parallel. In an alternative arrangement, the filter circuit can comprise of an inductor. A first Josephson junction can be connected to the filter circuit and to the secondary winding. The Josephson junction triggers in response to the incoming SFQ pulse and regenerates a pulse signal in response to a power discharge from the secondary winding.Type: ApplicationFiled: May 4, 2010Publication date: August 19, 2010Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATIONInventors: Quentin P. Herr, James E. Baumgardner, Anna Y. Herr
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Publication number: 20100033206Abstract: In one embodiment, the disclosure relates to a single flux quantum (SFQ) signal transmission line powered by an AC power source. The AC power source supplies power to a transformer having a primary winding and a secondary winding. The primary winding receives the AC signal and the secondary winding communicates the signal to the SFQ transmission line. The transmission line can optionally include an input filter circuit for receiving the incoming SFQ pulse. The filter circuit can have a resistor and an inductor connected in parallel. In an alternative arrangement, the filter circuit can comprise of an inductor. A first Josephson junction can be connected to the filter circuit and to the secondary winding. The Josephson junction triggers in response to the incoming SFQ pulse and regenerates a pulse signal in response to a power discharge from the secondary winding.Type: ApplicationFiled: May 7, 2009Publication date: February 11, 2010Applicant: Northrop Grumman Systems CorporationInventors: Quentin P. Herr, James E. Baumgardner, Anna Y. Herr