Patents by Inventor Chi Xiong
Chi Xiong 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: 12332538Abstract: Techniques regarding quantum transducers are provided. For example, one or more embodiments described herein can include an apparatus that can comprise a superconducting microwave resonator having a microstrip architecture that can include a dielectric substrate positioned between a superconducting waveguide and a superconducting ground plane. The superconducting waveguide can have a first material composition. Also, the superconducting ground plane can have a second material composition that is distinct from the first material composition. Further, an optical resonator can be arranged with the dielectric substrate.Type: GrantFiled: July 23, 2021Date of Patent: June 17, 2025Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Abram L Falk, Chi Xiong, Swetha Kamlapurkar, Jason S. Orcutt
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Publication number: 20250131304Abstract: Techniques are provided for performing an optically heralded entanglement process to entangle states of a first data quantum bit and a second data quantum bit into an entangled state of computational basis states comprising a ground state and a first excited state. An optically heralded entanglement process comprises performing a first optically heralded entanglement process to determine whether the entangled state of the first data quantum bit and the second data quantum bit excludes a state in which both the first data quantum bit and the second data quantum bit can be in the ground state, and performing a second optically heralded entanglement process to determine whether the entangled state of the first data quantum bit and the second data quantum bit excludes a state in which both the first data quantum bit and the second data quantum bit can be in the first excited state.Type: ApplicationFiled: October 20, 2023Publication date: April 24, 2025Inventors: Abram L Falk, Jason S. Orcutt, Timothy Phung, Chi Xiong
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Publication number: 20250110276Abstract: Devices and/or methods of fabrication facilitating suppression of embedded SiGe optical waveguides with low defectivity are provided. In an embodiment, a device can comprise a substrate comprising a trench within the substrate, wherein the trench comprises a base surface and sidewalls comprising the substrate; and a fully strained silicon-germanium (SiGe) structure located within the trench, wherein a bottom surface of the SiGe structure is in contact with the base surface, wherein side surfaces of the SiGe structure are in contact with the sidewalls, and wherein the SiGe structure is at least twice the critical thickness.Type: ApplicationFiled: September 28, 2023Publication date: April 3, 2025Inventors: Stephen W. Bedell, Jason S. Orcutt, Abram L Falk, Chi Xiong, Cihan Kurter, Ashutosh Rao
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Patent number: 12197104Abstract: Devices and/or methods provided herein relate to providing conversion of photons between an optical domain and a microwave domain. An electronic structure can comprise a resonator assembly comprising a microwave resonator and an optical resonator, an optical pump waveguide that transmits an optical pump input to the resonator assembly, and an optical signal waveguide, separate from the optical pump waveguide, that transmits an optical signal relative to the resonator assembly. The electronic structure further can comprise a microwave signal waveguide that transmits a microwave signal relative to the resonator assembly. The optical pump waveguide can comprise a delay portion that delays receipt of the optical pump input to the resonator assembly through the optical pump waveguide to a time after reduction of a majority of decoherence of the resonator assembly caused by scattering of a portion of the optical pump input, which portion does not enter the optical pump waveguide.Type: GrantFiled: December 7, 2022Date of Patent: January 14, 2025Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Abram L Falk, Chi Xiong, Ryan Daniel Schilling, Jason S. Orcutt
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Publication number: 20240337896Abstract: Techniques regarding quantum transducers are provided. For example, one or more embodiments described herein can include an apparatus that can comprise a superconducting microwave resonator having a microstrip architecture that can include a dielectric substrate positioned between a superconducting waveguide and a superconducting ground plane. The superconducting waveguide can have a first material composition. Also, the superconducting ground plane can have a second material composition that is distinct from the first material composition. Further, an optical resonator can be arranged with the dielectric substrate.Type: ApplicationFiled: July 23, 2021Publication date: October 10, 2024Inventors: Abram L. Falk, Chi Xiong, SWETHA KAMLAPURKAR, Jason S. Orcutt
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Patent number: 12015185Abstract: Techniques regarding quantum transducers are provided. For example, one or more embodiments described herein can include an apparatus that can include a superconducting microwave resonator having a microstrip architecture that includes a dielectric layer positioned between a superconducting waveguide and a ground plane. The apparatus can also include an optical resonator positioned within the dielectric layer.Type: GrantFiled: March 3, 2021Date of Patent: June 18, 2024Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Abram L Falk, Chi Xiong, Swetha Kamlapurkar, Hanhee Paik, Jason S. Orcutt
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Publication number: 20240195512Abstract: Devices and/or methods provided herein relate to providing conversion of photons between an optical domain and a microwave domain. An electronic structure can comprise a resonator assembly comprising a microwave resonator and an optical resonator, an optical pump waveguide that transmits an optical pump input to the resonator assembly, and an optical signal waveguide, separate from the optical pump waveguide, that transmits an optical signal relative to the resonator assembly. The electronic structure further can comprise a microwave signal waveguide that transmits a microwave signal relative to the resonator assembly. The optical pump waveguide can comprise a delay portion that delays receipt of the optical pump input to the resonator assembly through the optical pump waveguide to a time after reduction of a majority of decoherence of the resonator assembly caused by scattering of a portion of the optical pump input, which portion does not enter the optical pump waveguide.Type: ApplicationFiled: December 7, 2022Publication date: June 13, 2024Inventors: Abram L Falk, Chi Xiong, Ryan Daniel Schilling, Jason S. Orcutt
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Patent number: 11940713Abstract: A quantum transducer device that comprises a microwave resonator component and optical resonator component that receives and transduce a set of optical photons and at least one of: a voltage pulse or modulated laser pulse, and generate a single microwave photon output.Type: GrantFiled: November 10, 2020Date of Patent: March 26, 2024Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Abram L Falk, Jason S. Orcutt, Chi Xiong
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Patent number: 11657314Abstract: Techniques regarding microwave-to-optical quantum transducers are provided. For example, one or more embodiments described herein can include an apparatus that can include a microwave resonator on a dielectric substrate and adjacent to an optical resonator, and a photon barrier structure at least partially surrounding an optical resonator, wherein the photon barrier structure is configured to provide isolation of the microwave resonator from optical photons in the dielectric substrate outside the photon barrier structure.Type: GrantFiled: March 3, 2021Date of Patent: May 23, 2023Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Chi Xiong, Jason S. Orcutt, Ricardo Alves Donaton, Stephen M. Gates, Swetha Kamlapurkar, Abram L Falk
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Publication number: 20230145368Abstract: Techniques regarding microwave-to-optical quantum transducers are provided. For example, one or more embodiments described herein can include an apparatus that can include a microwave resonator on a dielectric substrate and adjacent to an optical resonator, and a photon barrier structure at least partially surrounding an optical resonator, wherein the photon barrier structure is configured to provide isolation of the microwave resonator from optical photons in the dielectric substrate outside the photon barrier structure.Type: ApplicationFiled: March 3, 2021Publication date: May 11, 2023Inventors: Chi Xiong, Jason S. Orcutt, Ricardo Alves Donaton, Stephen M. Gates, SWETHA KAMLAPURKAR, Abram L Falk
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Publication number: 20220285818Abstract: Techniques regarding quantum transducers are provided. For example, one or more embodiments described herein can include an apparatus that can include a superconducting microwave resonator having a microstrip architecture that includes a dielectric layer positioned between a superconducting waveguide and a ground plane. The apparatus can also include an optical resonator positioned within the dielectric layer.Type: ApplicationFiled: March 3, 2021Publication date: September 8, 2022Inventors: Abram L. Falk, Chi Xiong, Swetha Kamlapurkar, Hanhee Paik, Jason S. Orcutt
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Publication number: 20220146905Abstract: A quantum transducer device that comprises a microwave resonator component and optical resonator component that receives and transduce a set of optical photons and at least one of: a voltage pulse or modulated laser pulse, and generate a single microwave photon output.Type: ApplicationFiled: November 10, 2020Publication date: May 12, 2022Inventors: Abram L Falk, Jason S. Orcutt, Chi Xiong
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Feed-forward spectral calibration methodology for line-scanned tunable laser absorption spectroscopy
Patent number: 11041803Abstract: A generalized feed-forward method for accurate tunable laser absorption spectroscopy includes generating a laser beam. The generated laser beam is directed down a reference path and a test/sample path. One or more parameters are extracted from the reference path. The one or more parameters, extracted from the reference path, are used as feed-forward, to adjust spectral analysis of the test/sample path to detect a composition and/or concentration of an analyte gas within the test/sample path. The extraction of the one or more parameters from the reference path and the spectral analysis of the test/sample path are performed substantially concurrently.Type: GrantFiled: March 26, 2019Date of Patent: June 22, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: William Green, Matthias Dittberner, Chi Xiong, Eric Zhang, Gerard Wysocki -
Publication number: 20210026066Abstract: Photonic circuits are disclosed having an efficient optical power distribution network. Laser chips (InP) having different wavelengths are flip-chip assembled near the center of a silicon photonic chip. Each InP die has multiple optical lanes, but a given die has only one wavelength. Waveguides formed in the photonic chip are optically connected to the lanes, and fan out to form multiple waveguide sets, where each waveguide set has one of the waveguides from each of the different wavelengths, i.e., one waveguide from each InP die. The waveguide network is optimized to minimize the number of crossings that any given waveguide may have, and no waveguide having a particular wavelength crosses another waveguide of the same wavelength. The unique arrangements of light sources and waveguides allows the use of a smaller number of more intense laser sources, particularly in applications such as performance-optimized datacenters where liquid cooling systems may be leveraged.Type: ApplicationFiled: July 22, 2019Publication date: January 28, 2021Inventors: Tymon Barwicz, Douglas M. Gill, William M. Green, Jason S. Orcutt, Jessie C. Rosenberg, Eugen Schenfeld, Chi Xiong
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Patent number: 10895682Abstract: Photonic circuits are disclosed having an efficient optical power distribution network. Laser chips (InP) having different wavelengths are flip-chip assembled near the center of a silicon photonic chip. Each InP die has multiple optical lanes, but a given die has only one wavelength. Waveguides formed in the photonic chip are optically connected to the lanes, and fan out to form multiple waveguide sets, where each waveguide set has one of the waveguides from each of the different wavelengths, i.e., one waveguide from each InP die. The waveguide network is optimized to minimize the number of crossings that any given waveguide may have, and no waveguide having a particular wavelength crosses another waveguide of the same wavelength. The unique arrangements of light sources and waveguides allows the use of a smaller number of more intense laser sources, particularly in applications such as performance-optimized datacenters where liquid cooling systems may be leveraged.Type: GrantFiled: July 22, 2019Date of Patent: January 19, 2021Assignee: International Business Machines CorporationInventors: Tymon Barwicz, Douglas M. Gill, William M. Green, Jason S. Orcutt, Jessie C. Rosenberg, Eugen Schenfeld, Chi Xiong
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FEED-FORWARD SPECTRAL CALIBRATION METHODOLOGY FOR LINE-SCANNED TUNABLE LASER ABSORPTION SPECTROSCOPY
Publication number: 20200309690Abstract: A generalized feed-forward method for accurate tunable laser absorption spectroscopy includes generating a laser beam. The generated laser beam is directed down a reference path and a test/sample path. One or more parameters are extracted from the reference path. The one or more parameters, extracted from the reference path, are used as feed-forward, to adjust spectral analysis of the test/sample path to detect a composition and/or concentration of an analyte gas within the test/sample path. The extraction of the one or more parameters from the reference path and the spectral analysis of the test/sample path are performed substantially concurrently.Type: ApplicationFiled: March 26, 2019Publication date: October 1, 2020Inventors: William Green, Matthias Dittberner, Chi Xiong, Eric Zhang, Gerard Wysocki -
Patent number: 10677726Abstract: A tunable diode laser absorption spectroscopy device includes a tunable diode laser. A laser driver is configured to drive the diode laser and ramp it within a particular frequency range. An analyte gas container, a reference gas container, and a fringe generating device are configured to receive the laser therethrough. An optical detector is configured to detect the laser after it has passed through the analyte gas container and/or the reference gas container, and the in-line fringe generating device. An acquisition card is configured to sample an output of the optical detector. A spectral analyzer is configured to receive output data from the acquisition card, determine a spectrum of the output data, decouple the fringe spectrum from the measured spectrum, calibrate the spectrum based on an expected ideal spectrum of both the fringe and reference gas, and determine a composition of the analyte based on the calibrated spectrum.Type: GrantFiled: December 19, 2017Date of Patent: June 9, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: William Green, Chu Cheyenne Teng, Gerard Wysocki, Chi Xiong, Eric Zhang
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Publication number: 20190187051Abstract: A tunable diode laser absorption spectroscopy device includes a tunable diode laser. A laser driver is configured to drive the diode laser and ramp it within a particular frequency range. An analyte gas container, a reference gas container, and a fringe generating device are configured to receive the laser therethrough. An optical detector is configured to detect the laser after it has passed through the analyte gas container and/or the reference gas container, and the in-line fringe generating device. An acquisition card is configured to sample an output of the optical detector. A spectral analyzer is configured to receive output data from the acquisition card, determine a spectrum of the output data, decouple the fringe spectrum from the measured spectrum, calibrate the spectrum based on an expected ideal spectrum of both the fringe and reference gas, and determine a composition of the analyte based on the calibrated spectrum.Type: ApplicationFiled: December 19, 2017Publication date: June 20, 2019Inventors: William GREEN, Chu Cheyenne TENG, Gerard WYSOCKI, Chi XIONG, Eric ZHANG
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Patent number: 10203525Abstract: Techniques for increasing efficiency of thermo-optic phase shifters using multi-pass heaters and thermal bridges are provided. In one aspect, a thermo-optic phase shifter device includes: a plurality of optical waveguides formed in an SOI layer over a buried insulator; at least one heating element adjacent to the optical waveguides; and thermal bridges connecting at least one of the optical waveguides directly to the heating element. A method for forming a thermo-optic phase shifter device is also provided.Type: GrantFiled: May 18, 2017Date of Patent: February 12, 2019Assignee: International Business Machines CorporationInventors: Douglas M. Gill, Chi Xiong
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Patent number: 10197819Abstract: Techniques for increasing efficiency of thermo-optic phase shifters using multi-pass heaters and thermal bridges are provided. In one aspect, a thermo-optic phase shifter device includes: a plurality of optical waveguides formed in an SOI layer over a buried insulator; at least one heating element adjacent to the optical waveguides; and thermal bridges connecting at least one of the optical waveguides directly to the heating element. A method for forming a thermo-optic phase shifter device is also provided.Type: GrantFiled: December 29, 2017Date of Patent: February 5, 2019Assignee: International Business Machines CorporationInventors: Douglas M. Gill, Chi Xiong