Patents by Inventor James E. Baumgardner
James E. Baumgardner 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: 20110133770Abstract: In one embodiment, the disclosure relates to a method and apparatus for controlling the energy state of a qubit by bringing the qubit into and out of resonance by coupling the qubit to a flux quantum logic gate. The qubit can be in resonance with a pump signal, with another qubit or with some quantum logic gate. In another embodiment, the disclosure relates to a method for controlling a qubit with RSFQ logic or through the interface between RSFQ and the qubit.Type: ApplicationFiled: February 7, 2011Publication date: June 9, 2011Inventors: John Xavier PRZYBYSZ, James E. Baumgardner, Aaron A. Pesetski, Donald Lynn Miller, Quentin P. Herr
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Patent number: 7893708Abstract: Systems and methods are provided for performing a quantum gate operation. A first classical control parameter is associated with a first qubit and coupled to a resonator. The first classical control parameter is transitioned from a first control value to a second control value. The first classical control parameter is returned from the second control value to the first control value via an adiabatic sweep operation, as to permit a transfer of energy between the first qubit and the resonator that causes a change in the quantum state of the qubit and resonator.Type: GrantFiled: March 29, 2010Date of Patent: February 22, 2011Assignee: Northrop Grumman Systems CorporationInventors: James E. Baumgardner, Aaron A. Pesetski
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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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Patent number: 7841247Abstract: A system for controlling the temperature of fluidic samples includes a device having a first outer surface and a second outer surface which are parallel to one another. The interior of the device contains two or more channels suitable for accommodating samples. The channels lay on a common plane that is also parallel to the first and second outer surfaces. A temperature sensor is positioned between the channels along the common plane. A heater is thermally coupled to one of the two outer surfaces while a heat sink is coupled to the other of the two outer surfaces, thereby establishing a temperature gradient between the first and second outer surfaces. A temperature controller receives sensed temperature input from the temperature sensor and adjusts the heater in response thereto.Type: GrantFiled: January 20, 2006Date of Patent: November 30, 2010Assignee: Oscillogy LLCInventor: James E. Baumgardner
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Publication number: 20100282258Abstract: Prior approaches have delivered O2 to a subject by inhalation, but the relationship between local signal changes and metabolism has been complicated by H217O created in non-cerebral tissues. During a brief pulse of 17O2 inhalation, this arterial input function for H217O is negligible due to convective transport delays. Additional delays in the arterial input function due to restricted diffusion of water makes pulsed inhalation of 17O2 even more effective. Accordingly, ventilator system are provided to deliver 17O2 as a brief pulse to a subject. Subsequent MR imaging demonstrates delayed appearance of H217O in the cerebral ventricles, suggesting that the arterial input function of H217O is delayed by restricted water diffusion in addition to convective transit delays. Delivery as a brief pulse therefore offers significant advantages in relating MR signal changes directly to metabolism.Type: ApplicationFiled: July 18, 2008Publication date: November 11, 2010Applicant: The Trustee of the University of PennsylvaniaInventors: Dharmesh R. Tailor, James E. Baumgardner, Ravinder Reddy
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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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Patent number: 7772871Abstract: The disclosure relates to a method for providing a logic circuit element. The method includes arranging a series of Josephson junctions between a first Josephson junction and a second Josephson junction, the first Josephson junction having a first critical current (Ic1) and the second Josephson junction having a second critical current (Ic2); providing a working current to the first Josephson junction, the working current transmitting to the second Josephson junction through the series of the Josephson junctions; wherein the working current is sufficiently high to trigger the second Josephson junction while sufficiently low to not disturb super-conductivity of the series of intermediate Josephson junctions.Type: GrantFiled: April 28, 2008Date of Patent: August 10, 2010Assignee: Northrop Grumman CorporationInventors: Quentin P. Herr, James E. Baumgardner, Aaron A. Pesetski
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Publication number: 20100182039Abstract: Systems and methods are provided for performing a quantum gate operation. A first classical control parameter is associated with a first qubit and coupled to a resonator. The first classical control parameter is transitioned from a first control value to a second control value. The first classical control parameter is returned from the second control value to the first control value via an adiabatic sweep operation, as to permit a transfer of energy between the first qubit and the resonator that causes a change in the quantum state of the qubit and resonator.Type: ApplicationFiled: March 29, 2010Publication date: July 22, 2010Inventors: James E. Baumgardner, Aaron A. Pesetski
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Patent number: 7714605Abstract: A quantum logic gate is formed from multiple qubits coupled to a common resonator, wherein quantum states in the qubits are transferred to the resonator by transitioning a classical control parameter between control points at a selected one of slow and fast transition speeds, relative to the characteristic energy of the coupling, whereby a slow transition speed exchanges energy states of a qubit and the resonator, and a fast transition speed preserves the energy states of a qubit and the resonator.Type: GrantFiled: January 16, 2009Date of Patent: May 11, 2010Assignee: Northrop Grumman Systems CorporationInventors: James E. Baumgardner, Aaron A. Pesetski
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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
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Publication number: 20090322374Abstract: In one embodiment, the disclosure relates to a method and apparatus for controlling the energy state of a qubit by bringing the qubit into and out of resonance by coupling the qubit to a flux quantum logic gate. The qubit can be in resonance with a pump signal, with another qubit or with some quantum logic gate. In another embodiment, the disclosure relates to a method for controlling a qubit with RSFQ logic or through the interface between RSFQ and the qubit.Type: ApplicationFiled: May 29, 2008Publication date: December 31, 2009Inventors: John Xavier Przybysz, James E. Baumgardner, Aaron A. Pesetski, Donald Lynn Miller, Ouentin P. Herr
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Publication number: 20090267635Abstract: The disclosure relates to a method for providing a logic circuit element. The method includes arranging a series of Josephson junctions between a first Josephson junction and a second Josephson junction, the first Josephson junction having a first critical current (Ic1) and the second Josephson junction having a second critical current (Ic2); providing a working current to the first Josephson junction, the working current transmitting to the second Josephson junction through the series of the Josephson junctions; wherein the working current is sufficiently high to trigger the second Josephson junction while sufficiently low to not disturb super-conductivity of the series of intermediate Josephson junctions.Type: ApplicationFiled: April 28, 2008Publication date: October 29, 2009Inventors: Quentin P. Herr, James E. Baumgardner, Aaron A. Pesetski
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Publication number: 20090206871Abstract: A quantum logic gate is formed from multiple qubits coupled to a common resonator, wherein quantum states in the qubits are transferred to the resonator by transitioning a classical control parameter between control points at a selected one of slow and fast transition speeds, relative to the characteristic energy of the coupling, whereby a slow transition speed exchanges energy states of a qubit and the resonator, and a fast transition speed preserves the energy states of a qubit and the resonator.Type: ApplicationFiled: January 16, 2009Publication date: August 20, 2009Applicant: Northrop Grumman Systems CorporationInventors: James E. Baumgardner, Aaron A. Pesetski
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Patent number: 7498832Abstract: A quantum logic gate is formed from multiple qubits coupled to a common resonator, wherein quantum states in the qubits are transferred to the resonator by transitioning a classical control parameter between control points at a selected one of slow and fast transition speeds, relative to the characteristic energy of the coupling, whereby a slow transition speed exchanges energy states of a qubit and the resonator, and a fast transition speed preserves the energy states of a qubit and the resonator.Type: GrantFiled: August 3, 2007Date of Patent: March 3, 2009Assignee: Northrop Grumman Systems CorporationInventors: James E. Baumgardner, Aaron A. Pesetski
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Publication number: 20090033369Abstract: A quantum logic gate is formed from multiple qubits coupled to a common resonator, wherein quantum states in the qubits are transferred to the resonator by transitioning a classical control parameter between control points at a selected one of slow and fast transition speeds, relative to the characteristic energy of the coupling, whereby a slow transition speed exchanges energy states of a qubit and the resonator, and a fast transition speed preserves the energy states of a qubit and the resonator.Type: ApplicationFiled: August 3, 2007Publication date: February 5, 2009Inventors: James E. Baumgardner, Aaron A. Pesetski
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Publication number: 20080296562Abstract: Methods and apparatus for fabricating carbon nanotubes (CNTs) and carbon nanotube devices. These include a method of fabricating self-aligned CNT field-effect transistors (FET), a method and apparatus of selectively etching metallic CNTs and a method and apparatus of fabricating an oxide in a carbon nanotube (CNT) device. These methods and apparatus overcome many of the disadvantages and limitations of the prior art.Type: ApplicationFiled: May 31, 2007Publication date: December 4, 2008Inventors: James M. Murduck, John Douglas Adam, James E. Baumgardner, Aaron A. Pesetski, Hong Zhang Pesetski, John Xavier Przybysz
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Patent number: 7247470Abstract: An apparatus and method for measuring nitric oxide production and oxygen consumption in cultures of adherent cells continuously and without destroying the cells. The method involves flowing growth media through a tube having adherent cells are adhered to the inner surface thereof and then contacting the growth media with an NO or O2 sensor to detect the concentration of NO or O2 in the growth media.Type: GrantFiled: November 26, 2004Date of Patent: July 24, 2007Assignee: The Trustees of the University of PennsylvaniaInventors: James E. Baumgardner, Cynthia M. Otto