Patents by Inventor Anna Leese de Escobar

Anna Leese de Escobar 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).

  • Patent number: 11169222
    Abstract: A system is provided for detecting a radio frequency signal. The system includes a dielectric platform, a first SQUID array, a second array of SQUIDs and a processing component. The dielectric platform has a first planar surface and a second planar surface that is disposed at an angle relative to the first planar surface. The first array of SQUIDs is disposed on the first planar surface and can output a first detection signal based on the radio frequency signal. The second array of SQUIDs is disposed on the second planar surface and can output a second detection signal based on the radio frequency signal. The processing component can determine a first plane from which the radio frequency signal is transmitting based on the first detection signal and the second detection signal.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: November 9, 2021
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Benjamin Taylor, Thomas Sheffield, Daniel Hallman, Susan Anne Elizabeth Berggren, Anna Leese de Escobar
  • Publication number: 20210096193
    Abstract: A system is provided for detecting a radio frequency signal. The system includes a dielectric platform, a first SQUID array, a second array of SQUIDs and a processing component. The dielectric platform has a first planar surface and a second planar surface that is disposed at an angle relative to the first planar surface. The first array of SQUIDs is disposed on the first planar surface and can output a first detection signal based on the radio frequency signal. The second array of SQUIDs is disposed on the second planar surface and can output a second detection signal based on the radio frequency signal. The processing component can determine a first plane from which the radio frequency signal is transmitting based on the first detection signal and the second detection signal.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 1, 2021
    Inventors: Benjamin Taylor, Thomas Sheffield, Daniel Hallman, Susan Anne Elizabeth Berggren, Anna Leese de Escobar
  • Patent number: 10775451
    Abstract: A superconducting quantum interference device (SQUID) for mobile magnetic sensing applications comprising: at least two Josephson junction electrically connected to a superconducting loop; and a resistive element connected in series with one of the Josephson junctions in the superconducting loop. The resistive element is disposed in the same superconducting loop as the at least two Josephson junctions.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: September 15, 2020
    Assignee: United States Government as represented by the Secretary of the Navy
    Inventors: Anna Leese de Escobar, Robert Lewis Fagaly, Susan Anne Elizabeth Berggren, Benjamin Jeremy Taylor, Marcio Calixto de Andrade
  • Patent number: 10761152
    Abstract: A superconducting quantum interference device (SQUID) for mobile applications comprising: a superconducting flux transformer having a pickup coil and an input coil, wherein the input coil is inductively coupled to a Josephson junction; a resistive element connected in series between the pickup coil and the input coil so as to function as a high pass filter such that direct current (DC) bias current is prevented from flowing through the input coil; and a flux bias circuit electrically connected in parallel to the superconducting flux transformer between the pickup coil and the input coil so as to reduce motion-induced noise.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: September 1, 2020
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Anna Leese de Escobar, Robert Lewis Fagaly, Susan Anne Elizabeth Berggren, Benjamin Jeremy Taylor, Marcio Calixto de Andrade
  • Patent number: 10725141
    Abstract: First and second superconductive sensors receive an electromagnetic signal. The first and second superconductive sensors are spaced apart such that there is a phase difference between the electromagnetic signal as received at the first and second superconductive sensors. The first and second superconductive sensors output respective first and second voltage signals corresponding to the electromagnetic signal as received by the first and second superconductive sensors. A nonlinear detector detects a voltage difference between the first and second voltage signals and provides an output signal representing the detected voltage difference. The output signal corresponds to the phase difference between the electromagnetic signal as received at the first and second superconductive sensors.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: July 28, 2020
    Assignee: United States of America as represented by Secretary of the Navy
    Inventors: Benjamin J Taylor, Susan Anne Elizabeth Berggren, Anna Leese De Escobar
  • Publication number: 20200081075
    Abstract: A superconducting quantum interference device (SQUID) for mobile magnetic sensing applications comprising: at least two Josephson junction electrically connected to a superconducting loop; and a resistive element connected in series with one of the Josephson junctions in the superconducting loop.
    Type: Application
    Filed: September 12, 2018
    Publication date: March 12, 2020
    Inventors: Anna Leese de Escobar, Robert Lewis Fagaly, Susan Anne Elizabeth Berggren, Benjamin Jeremy Taylor, Marcio Calixto de Andrade
  • Publication number: 20200081076
    Abstract: A superconducting quantum interference device (SQUID) for mobile applications comprising: a superconducting flux transformer having a pickup coil and an input coil, wherein the input coil is inductively coupled to a Josephson junction; a resistive element connected in series between the pickup coil and the input coil so as to function as a high pass filter such that direct current (DC) bias current is prevented from flowing through the input coil; and a flux bias circuit electrically connected in parallel to the superconducting flux transformer between the pickup coil and the input coil so as to reduce motion-induced noise.
    Type: Application
    Filed: September 12, 2018
    Publication date: March 12, 2020
    Inventors: Anna Leese de Escobar, Robert Lewis Fagaly, Susan Anne Elizabeth Berggren, Benjamin Jeremy Taylor, Marcio Calixto de Andrade
  • Publication number: 20200041602
    Abstract: First and second superconductive sensors receive an electromagnetic signal. The first and second superconductive sensors are spaced apart such that there is a phase difference between the electromagnetic signal as received at the first and second superconductive sensors. The first and second superconductive sensors output respective first and second voltage signals corresponding to the electromagnetic signal as received by the first and second superconductive sensors. A nonlinear detector detects a voltage difference between the first and second voltage signals and provides an output signal representing the detected voltage difference. The output signal corresponds to the phase difference between the electromagnetic signal as received at the first and second superconductive sensors.
    Type: Application
    Filed: July 31, 2018
    Publication date: February 6, 2020
    Inventors: BENJAMIN J. TAYLOR, SUSAN ANNE ELIZABETH BERGGREN, ANNA LEESE DE ESCOBAR
  • Patent number: 10514429
    Abstract: An intrinsic superconducting gradiometer comprising: a first array having at least two superconducting devices, wherein the first array has upper and lower terminals located on opposite sides of the first array, wherein the upper terminal is configured to receive a bias signal; and a second array that is identical to, oriented the same as, and located in close proximity to the first array, wherein the second array's upper terminal is grounded and its lower terminal is electrically connected to the first array's lower terminal such that a measured voltage difference between the first array's upper terminal and the second array's upper terminal represents a net current generated by a gradient magnetic field where near-field measurements are cancelled, and wherein the intrinsic superconducting gradiometer is designed to provide the measured voltage difference that is directly proportional to the magnetic field gradient without being connected to any external coils or flux transducers.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: December 24, 2019
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Susan Anne Elizabeth Berggren, Robert Lewis Fagaly, Anna Leese de Escobar, Marcio de Andrade, Benjamin Jeremy Taylor
  • Publication number: 20190339339
    Abstract: An intrinsic superconducting gradiometer comprising: a first array having at least two superconducting devices, wherein the first array has upper and lower terminals located on opposite sides of the first array, wherein the upper terminal is configured to receive a bias signal; and a second array that is identical to, oriented the same as, and located in close proximity to the first array, wherein the second array's upper terminal is grounded and its lower terminal is electrically connected to the first array's lower terminal such that a measured voltage difference between the first array's upper terminal and the second array's upper terminal represents a net current generated by a gradient magnetic field where near-field measurements are cancelled, and wherein the intrinsic superconducting gradiometer is designed to provide the measured voltage difference that is directly proportional to the magnetic field gradient without being connected to any external coils or flux transducers.
    Type: Application
    Filed: May 3, 2018
    Publication date: November 7, 2019
    Inventors: Susan Anne Elizabeth Berggren, Robert Lewis Fagaly, Anna Leese de Escobar, Marcio de Andrade, Benjamin Jeremy Taylor
  • Patent number: 10338157
    Abstract: A biosignal measuring device that can include at least one Super-conducting Quantum Interference Device (SQUID) array (SQA) of High Temperature Superconducting (HTS) Josephson Junctions (JJs). The HTS JJs operating parameters can be adjusted to establish an anti-peak response for the SQA, that can be at a maximum along a defined response axis, for detection of extremely small biomagnetic fields. For operation, the SQA can be maneuvered around a target area of a stationary subject that is emitting biomagnetic signals using a stand with three degrees of freedom, so that the response axis remains orthogonal to the subject target area. The device can further include a radome with an atomic layer deposition (ALD) window on the radome surface. The radome ALD surface can allow for passage of magnetic signals through the ALD window and radome, while simultaneously preventing passage of infrared radiation therethrough.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: July 2, 2019
    Assignee: The United States of America, as Represented by the Secretary of the Navy
    Inventors: Marcio C. de Andrade, Anna Leese de Escobar, Brandon J. Wiedemeier, Jamie R. Lukos, Shannon Kasa, Matthew A. Yanagi
  • Patent number: 10262871
    Abstract: A method includes depositing a layer of silicon oxide onto a layer of silicon carbide; ion implanting the layer of silicon carbide, annealing the ion implanted layer of silicon carbide to produce defects within the layer of silicon carbide, performing photolithography using a mask layer on regions of the layer of silicon carbide to define regions for electrode deposition, removing the layer of silicon oxide from the layer of silicon carbide in the one or more regions for electrode deposition, forming one or more electrodes by depositing indium tin oxide (ITO) in each of the regions for electrode deposition, performing a first lift-off operation to remove the mask layer surrounding the electrodes, depositing a passivation and gate silicon oxide layer on top of the layer of silicon carbide and the electrodes, and performing a second lift-off operation to fabricate an optically transparent ITO gate between the electrodes.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: April 16, 2019
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Osama Nayfeh, Anna Leese De Escobar, Brad Liu, Patrick Sims, Sam Carter, David Kurt Gaskill, Tom Reinecke
  • Patent number: 10175308
    Abstract: A High Temperature Superconducting (HTS) Superconducting Quantum Interference Device and methods for fabrication can include at least one bi-Superconducting Quantum Interference Device. The bi-SQUID can include an HTS substrate that can be formed with a step edge. A superconducting loop of YBCO can be deposited on the step edge to establish two Josephson Junctions. A superconducting path that bi-sects the superconducting loop path can also be deposited onto the substrate. In some embodiments, the bisecting path can cross the step edge twice, and the bisecting path can be ion milled at one of the crossing points to round the bisecting path and thereby remove the fourth Josephson Junction at the other crossing point. In still other embodiments, the bisecting path can be completely on the upper shelf (or the lower shelf), and the bisecting path can be ion damaged, ion damaged, or particle damaged, to establish the third Josephson Junction.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: January 8, 2019
    Assignee: The United States of America, as Represented by the Secretary of the Navy
    Inventors: Susan Anne Elizabeth Berggren, Benjamin J. Taylor, Anna Leese de Escobar
  • Publication number: 20190004123
    Abstract: A High Temperature Superconducting (HTS) Superconducting Quantum Interference Device and methods for fabrication can include at least one bi-Superconducting Quantum Interference Device. The bi-SQUID can include an HTS substrate that can be formed with a step edge. A superconducting loop of YBCO can be deposited on the step edge to establish two Josephson Junctions. A superconducting path that bi-sects the superconducting loop path can also be deposited onto the substrate. In some embodiments, the bisecting path can cross the step edge twice, and the bisecting path can be ion milled at one of the crossing points to round the bisecting path and thereby remove the fourth Josephson Junction at the other crossing point. In still other embodiments, the bisecting path can be completely on the upper shelf (or the lower shelf), and the bisecting path can be ion damaged, ion damaged, or particle damaged, to establish the third Josephson Junction.
    Type: Application
    Filed: August 22, 2018
    Publication date: January 3, 2019
    Applicant: United States of America, as Represented by the Secretary of the Navy
    Inventors: Susan Anne Elizabeth Berggren, Benjamin J. Taylor, Anna Leese de Escobar
  • Publication number: 20180267116
    Abstract: A biosignal measuring device that can include at least one Super-conducting Quantum Interference Device (SQUID) array (SQA) of High Temperature Superconducting (HTS) Josephson Junctions (JJs). The HTS JJs operating parameters can be adjusted to establish an anti-peak response for the SQA, that can be at a maximum along a defined response axis, for detection of extremely small biomagnetic fields. For operation, the SQA can be maneuvered around a target area of a stationary subject that is emitting biomagnetic signals using a stand with three degrees of freedom, so that the response axis remains orthogonal to the subject target area. The device can further include a radome with an atomic layer deposition (ALD) window on the radome surface. The radome ALD surface can allow for passage of magnetic signals through the ALD window and radome, while simultaneously preventing passage of infrared radiation therethrough.
    Type: Application
    Filed: May 16, 2018
    Publication date: September 20, 2018
    Applicant: United States of America, as Represented by the Secretary of the Navy
    Inventors: Marcio C. de Andrade, Anna Leese de Escobar, Brandon J. Wiedemeier, Jamie R. Lukos, Shannon Kasa, Matthew A. Yanagi
  • Patent number: 10078118
    Abstract: A High Temperature Superconducting (HTS) Superconducting Quantum Interference Device and methods for fabrication can include at least one bi-Superconducting Quantum Interference Device. The bi-SQUID can include an HTS substrate that can be formed with a step edge. A superconducting loop of YBCO can be deposited on the step edge to establish two Josephson Junctions. A superconducting path that bi-sects the superconducting loop path can also be deposited onto the substrate. In some embodiments, the bisecting path can cross the step edge twice, and the bisecting path can be ion milled at one of the crossing points to round the bisecting path and thereby remove the fourth Josephson Junction at the other crossing point. In still other embodiments, the bisecting path can be completely on the upper shelf (or the lower shelf), and the bisecting path can be ion damaged, ion damaged, or particle damaged, to establish the third Josephson Junction.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: September 18, 2018
    Assignee: The United States of America as represented by Secretary of the Navy
    Inventors: Susan Anne Elizabeth Berggren, Benjamin J. Taylor, Anna Leese de Escobar
  • Publication number: 20170322265
    Abstract: A High Temperature Superconducting (HTS) Superconducting Quantum Interference Device and methods for fabrication can include at least one bi-Superconducting Quantum Interference Device. The bi-SQUID can include an HTS substrate that can be formed with a step edge. A superconducting loop of YBCO can be deposited on the step edge to establish two Josephson Junctions. A superconducting path that bi-sects the superconducting loop path can also be deposited onto the substrate. In some embodiments, the bisecting path can cross the step edge twice, and the bisecting path can be ion milled at one of the crossing points to round the bisecting path and thereby remove the fourth Josephson Junction at the other crossing point. In still other embodiments, the bisecting path can be completely on the upper shelf (or the lower shelf), and the bisecting path can be ion damaged, ion damaged, or particle damaged, to establish the third Josephson Junction.
    Type: Application
    Filed: May 6, 2016
    Publication date: November 9, 2017
    Applicant: United States of America, as Represented by the Secretary of the Navy
    Inventors: Susan Anne Elizabeth Berggren, Benjamin J. Taylor, Anna Leese de Escobar
  • Publication number: 20170256698
    Abstract: A tunable quantum qubit circuit comprising: a plurality of interconnected Josephson tunneling junctions sculpted in-situ on-chip, wherein each Josephson tunneling junction comprises a pair of high temperature superconductors separated by an active region having a controlled charge density; a capacitive-coupled control gate operatively coupled to the Josephson tunneling junctions and configured to simultaneously modulate energy levels of the Josephson tunneling junctions; and independent control gates operatively coupled to the Josephson tunneling junctions, wherein the independent control gates are reconfigurable on-the-fly by an operator.
    Type: Application
    Filed: March 3, 2016
    Publication date: September 7, 2017
    Inventors: Osama M. Nayfeh, Son Dinh, Anna Leese de Escobar, Kenneth Simonsen, Shahrokh Naderi
  • Patent number: 9755133
    Abstract: A tunable quantum qubit circuit comprising: a plurality of interconnected Josephson tunneling junctions sculpted in-situ on-chip, wherein each Josephson tunneling junction comprises a pair of high temperature superconductors separated by an active region having a controlled charge density; a capacitive-coupled control gate operatively coupled to the Josephson tunneling junctions and configured to simultaneously modulate energy levels of the Josephson tunneling junctions; and independent control gates operatively coupled to the Josephson tunneling junctions, wherein the independent control gates are reconfigurable on-the-fly by an operator.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 5, 2017
    Assignee: The United States of America as represented by Secretary of the Navy
    Inventors: Osama M. Nayfeh, Son Dinh, Anna Leese de Escobar, Kenneth Simonsen, Shahrokh Naderi
  • Patent number: 9455391
    Abstract: A process for constructing a superconducting Josephson-based nonvolatile quantum memory device comprising: sequentially depositing on a silicon substrate a thermal oxide buffer layer, a superconductor bottom-electrode thin film, and an oxide isolation layer; patterning an active window having dimensions smaller that 10 nanometers in the oxide isolation layer; then sequentially depositing a bottom tunnel oxide layer, a charge-trapping layer, a top cap, and a top superconductor electrode layer; defining an active region by dry etching down to the oxide isolation layer while protecting the active region from etch chemistry; depositing a device passivation layer; defining and patterning vias from a top of the device passivation layer to the superconductor bottom-electrode thin film and to the top superconductor electrode of the active region; and depositing metal interconnect into the vias.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 27, 2016
    Assignee: The United States of America as represented by Secretary of the Navy
    Inventors: Osama M. Nayfeh, Son Dinh, Anna Leese de Escobar, Kenneth Simonsen