Patents by Inventor Andreas Fuhrer Janett
Andreas Fuhrer Janett 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: 20240135223Abstract: A qubit device or system having isolated bottom corner gates includes a semiconductor substrate and a semiconductor fin perpendicularly adjoining a top surface of the substrate. The qubit device also includes a first gate located at a first corner between a first side of the fin and the top surface of the substrate, and a second gate located at a second corner between a second, opposite side of the fin and the top surface of the substrate. The first and second gates are electrically isolated from each other and used to control a first quantum dot near the top of the fin. A third gate located at the first corner has a contact for accumulating a channel to facilitate charge transport to and from a second quantum dot located near the bottom of the fin accumulated using the first and second gates.Type: ApplicationFiled: October 19, 2022Publication date: April 25, 2024Inventors: Felix Julian Schupp, Noelia Vico Trivino, Matthias Mergenthaler, Andreas Fuhrer Janett
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Patent number: 11946964Abstract: One or more systems, devices and/or methods of use provided herein relate to a device that can facilitate a process to measure a pair of spectral sidebands and suppress one of common mode phase or amplitude noise. A device can comprise an interferometer device that can detect an interference of two spectral sidebands. The interferometer device can comprise a signal circuit that can detect at least one of a phase or an amplitude of a signal resulting from the interference of the two spectral sidebands, an IQ modulator that can generate the two spectral sidebands using a portion of a local oscillator (LO) microwave signal and a pair of signals at a same intermediate frequency, and/or a mixer that can interfere the two spectral sidebands having been output or reflected from a device under test, including mixing the two spectral sidebands with another portion of the LO microwave signal.Type: GrantFiled: December 27, 2021Date of Patent: April 2, 2024Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Nicolò Crescini, Andreas Fuhrer Janett, Gian R. von Salis, Eoin Gerard Kelly
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Publication number: 20230204647Abstract: One or more systems, devices and/or methods of use provided herein relate to a device that can facilitate a process to measure a pair of spectral sidebands and suppress one of common mode phase or amplitude noise. A device can comprise an interferometer device that can detect an interference of two spectral sidebands. The interferometer device can comprise a signal circuit that can detect at least one of a phase or an amplitude of a signal resulting from the interference of the two spectral sidebands, an IQ modulator that can generate the two spectral sidebands using a portion of a local oscillator (LO) microwave signal and a pair of signals at a same intermediate frequency, and/or a mixer that can interfere the two spectral sidebands having been output or reflected from a device under test, including mixing the two spectral sidebands with another portion of the LO microwave signal.Type: ApplicationFiled: December 27, 2021Publication date: June 29, 2023Inventors: Nicolò Crescini, Andreas Fuhrer Janett, Gian R. von Salis, Eoin Gerard Kelly
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Patent number: 11641785Abstract: A method of modifying a resonant frequency of a quantum device includes generating an ion beam having a beam energy and exposing a surface of the quantum device to the ion beam for an exposure time. The ion beam is incident onto the quantum device at an oblique angle that is less than 90 degrees as measured from the surface of the quantum device. The quantum device includes a Josephson junction, the ion beam exposing the quantum device proximate to the Josephson junction to modify a property of the Josephson junction, the property being associated with the resonant frequency of the quantum device.Type: GrantFiled: October 6, 2020Date of Patent: May 2, 2023Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Matthias Mergenthaler, Andreas Fuhrer Janett, Stephan Paredes, Peter Mueller
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Publication number: 20220109095Abstract: A method of modifying a resonant frequency of a quantum device includes generating an ion beam having a beam energy and exposing a surface of the quantum device to the ion beam for an exposure time. The ion beam is incident onto the quantum device at an oblique angle that is less than 90 degrees as measured from the surface of the quantum device. The quantum device includes a Josephson junction, the ion beam exposing the quantum device proximate to the Josephson junction to modify a property of the Josephson junction, the property being associated with the resonant frequency of the quantum device.Type: ApplicationFiled: October 6, 2020Publication date: April 7, 2022Inventors: Matthias Mergenthaler, Andreas Fuhrer Janett, Stephan Paredes, Peter Mueller
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Patent number: 11251355Abstract: A method of an embodiment includes forming a capacitor pad for a nonlinear resonator. In an embodiment, the method includes comparing a resonance frequency of the nonlinear resonator to a target frequency to determine whether the resonance frequency falls within a range of the target frequency. A device of an embodiment includes a first capacitor pad comprising a superconducting material, the first capacitor pad configured to couple to a first end of a logic circuit element. In an embodiment, the device includes a second capacitor pad comprising a second superconducting material, the capacitor pad configured to couple to a second end of the logic circuit element. In an embodiment, the second capacitor pad includes a first portion; a second portion; and a bridge configured to electrically connect the first portion and the second portion.Type: GrantFiled: March 5, 2019Date of Patent: February 15, 2022Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Thilo Hermann Curt Stoeferle, Andreas Fuhrer Janett, Stefan Filipp
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Patent number: 11165429Abstract: The invention is notably directed to a method of operating a superconducting channel. The method relies on a device including: a potentially superconducting material; a gate electrode; and an electrically insulating medium. A channel is defined by the potentially superconducting material. The gate electrode positioned adjacent to the channel, such that an end surface of the gate electrode faces a portion of the channel. The electrically insulating medium is arranged in such a manner that it electrically insulates the gate electrode from the channel. Rendering the channel superconducting by cooling down the device. Next, a voltage difference is applied between the gate electrode and the channel to inject electrons in the channel through the electrically insulating medium and thereby generate a gate current between the gate electrode and the channel. The electrons are injected with an average energy sufficient to modify a critical current IC of the channel.Type: GrantFiled: March 26, 2020Date of Patent: November 2, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Andreas Fuhrer Janett, Fabrizio Nichele, Markus Fabian Ritter, Heike Erika Riel
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Patent number: 11152707Abstract: A device package includes a chip carrier having a cavity and one or more microwave waveguides configured to route signals. There is a chip including one or more pads and located within the cavity of the chip carrier. Each pad is aligned with a corresponding connector pad of a microwave waveguide of the one or more microwave waveguides of the chip carrier. At least one of the one or more pads is coupled to the connector pad of the corresponding microwave waveguide by way of an overlap capacitive coupling between the at least one pad and the aligned corresponding connector pad of the microwave waveguide.Type: GrantFiled: July 2, 2020Date of Patent: October 19, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Andreas Fuhrer Janett, Stephan Paredes, Thilo Hermann Curt Stoeferle, Stefan Filipp, Matthias Mergenthaler
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Publication number: 20210305987Abstract: The invention is notably directed to a method of operating a superconducting channel. The method relies on a device including: a potentially superconducting material; a gate electrode; and an electrically insulating medium. A channel is defined by the potentially superconducting material. The gate electrode positioned adjacent to the channel, such that an end surface of the gate electrode faces a portion of the channel. The electrically insulating medium is arranged in such a manner that it electrically insulates the gate electrode from the channel. Rendering the channel superconducting by cooling down the device. Next, a voltage difference is applied between the gate electrode and the channel to inject electrons in the channel through the electrically insulating medium and thereby generate a gate current between the gate electrode and the channel. The electrons are injected with an average energy sufficient to modify a critical current IC of the channel.Type: ApplicationFiled: March 26, 2020Publication date: September 30, 2021Inventors: Andreas Fuhrer Janett, Fabrizio Nichele, Markus Fabian Ritter, Heike Erika Riel