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公开(公告)号：US10720562B2
公开(公告)日：2020-07-21
申请号：US16507255
申请日：2019-07-10
IPC分类号： H01L39/02 , B82Y10/00 , B82Y40/00 , H01L29/43 , H01L29/66 , H01L29/06 , H01L29/41 , H01L39/24 , H01L39/22 , H01L39/12 , C23C14/28 , C30B11/12 , C30B23/02 , C30B23/06 , C30B29/62
摘要： The present disclosure relates to nanoscale device comprising an elongated crystalline nanostructure, such as a nanowire crystal, a nanowhisker crystal or a nanorod crystal, and a method for producing thereof. One embodiment relates to a nanoscale device comprising an elongated crystalline semiconductor nanostructure, such as a nanowire (crystal) or nanowhisker (crystal) or nanorod (crystal), having a plurality of substantially plane side facets, a crystalline structured first facet layer of a superconductor material covering at least a part of one or more of said side facets, and a second facet layer of a superconductor material covering at least a part of the first facet layer, the superconductor material of the second facet layer being different from the superconductor material of the first facet layer, wherein the crystalline structure of the semiconductor nanostructure is epitaxially matched with the crystalline structure of the first facet layer on the interface between the two crystalline structures.
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公开(公告)号：US20200227618A1
公开(公告)日：2020-07-16
申请号：US16247234
申请日：2019-01-14
申请人： Auburn University
摘要： One or more dielectric barriers, such as, but not limited to, aluminum oxide (Al2O3), is used to isolate and protect super conductive (SC) structures. The SC structures are formed from SC materials, such as, but not limited to, niobium, from other surrounding materials. Using the barriers significantly reduces and/or eliminates the degradation of the superconducting properties of the SC structures during subsequent fabrication steps that employ elevated temperatures. As a result, incorporation of the barriers relaxes the need to use lower temperature fabrication processes and opens up possibilities for use of different more desirable processes and/or materials during subsequent fabrication steps.
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公开(公告)号：US10715083B2
公开(公告)日：2020-07-14
申请号：US16385667
申请日：2019-04-16
发明人： Baleegh Abdo
摘要： Superconducting device applications implemented with two surface acoustic wave resonators coupled to a Josephson ring modulator are provided. A method can include receiving, by a unitary Josephson mixer and from a first superconducting surface acoustic wave resonator of a superconducting device, a first surface acoustic wave signal that comprises one or more phonons that resonate at a first frequency, and receiving, by the unitary Josephson mixer and from a radio frequency source operatively coupled to the unitary Josephson mixer, a radio frequency control signal. The method can also include mixing the first surface acoustic wave signal and the radio frequency control signal and outputting a second surface acoustic wave signal based on mixing the first surface acoustic wave signal and the radio frequency control signal. The second surface acoustic wave signal can comprise one or more phonons that resonate at a second frequency.
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公开(公告)号：US10706991B2
公开(公告)日：2020-07-07
申请号：US15547813
申请日：2016-02-03
发明人： Kotaro Ohki , Tatsuoki Nagaishi
摘要： There is provided a technique for producing a superconducting wire material in which the yield in a process of joining superconducting wire materials is improved over the related art. A method for producing a superconducting wire material lengthened by joining end portions of superconducting wire materials each having an oxide superconducting film, the end portions serving as joining surfaces, includes a step of disposing a micro-crystal of an oxide superconducting material on each of the joining surfaces of the oxide superconducting films, a pasting step of overlapping and pasting together the joining surfaces on which the micro-crystal is disposed, and a heat joining step of heating the overlapped joining surfaces to grow the micro-crystal, thereby forming, as a joining layer, a superconducting layer of the oxide superconducting material to join the joining surfaces to each other. A superconducting joining member for lengthening a superconducting wire material by performing heating while the superconducting joining member is pasted so as to bridge oxide superconducting thin films of two superconducting wire materials to join the two superconducting wire materials, wherein a micro-crystal of an oxide superconducting material is disposed on a joining surface.
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公开(公告)号：US10693566B2
公开(公告)日：2020-06-23
申请号：US15567198
申请日：2016-04-15
申请人： Yale University
发明人： Katrina Sliwa , Michael Hatridge , Anirudh Narla , Shyam Shankar , Luigi Frunzio , Robert J. Schoelkopf, III , Michel Devoret
IPC分类号： H04B10/90 , G06N99/00 , H04B10/70 , H01L27/18 , H03D7/00 , H01L39/02 , H01L39/04 , H01L39/22 , H01P3/12 , H03F19/00 , H03D9/06 , H01P5/08 , G06N10/00 , H01P5/02 , H01P5/103
摘要： A wireless Josephson-junction-based parametric converter is described. The converter may be formed on a substrate with antennas that pump are configured to wirelessly receive pump, signal and idler frequencies and couple the received frequencies to the converter's circuitry. Capacitors may also be fabricated on the same substrate and sized to tune operation of the converter to desired frequencies. The converter may be coupled directly to microwave waveguides, and may be tuned to different signal frequencies by applying magnetic flux to the converter circuitry.
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公开(公告)号：US20200184364A1
公开(公告)日：2020-06-11
申请号：US16793174
申请日：2020-02-18
发明人： BALEEGH ABDO
摘要： A technique relates to configuring a superconducting router. The superconducting router is operated in a first mode. Ports are configured to be in reflection in the first mode in order to reflect a signal. The superconducting router is operated in a second mode. A given pair of the ports is connected together and in transmission in the second mode, such that the signal is permitted to pass between the given pair of the ports.
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87.发明授权公开(公告)号：US10665701B2
公开(公告)日：2020-05-26
申请号：US16120434
申请日：2018-09-03
发明人： Michael Hartley Freedman , Bernard van Heck , Georg Wolfgang Winkler , Torsten Karzig , Roman Lutchyn , Peter Krogstrup Jeppesen , Chetan Nayak , Charles Masamed Marcus , Saulius Vaitiekėnas
摘要： The disclosure relates to a quantum device and method of fabricating the same. The device comprises one or more semiconductor-superconductor nanowires, each comprising a length of semiconductor material and a coating of superconductor material coated on the semiconductor material. The nanowires may be formed over a substrate. In a first aspect at least some of the nanowires are full-shell nanowires with superconductor material being coated around a full perimeter of the semiconductor material along some or all of the length of the wire, wherein the device is operable to induce at least one Majorana zero mode, MZM, in one or more active ones of the full-shell nanowires. In a second aspect at least some of the nanowires are arranged vertically relative to the plane of the substrate in the finished device.
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公开(公告)号：US20200151133A1
公开(公告)日：2020-05-14
申请号：US16186157
申请日：2018-11-09
摘要： In an embodiment, a device includes a first high density interface in a first dilution fridge stage configured to receive a first set of transmission lines. In an embodiment, a device includes a second high density interface in a second dilution fridge stage configured to receive a second set of transmission lines. In an embodiment, a device includes a printed circuit board configured to transfer microwave signals between a first dilution fridge stage and the second dilution fridge stage, the first high density interface and the second high density interface coupled to the printed circuit board.
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公开(公告)号：US10650320B2
公开(公告)日：2020-05-12
申请号：US15764021
申请日：2015-09-30
申请人： GOOGLE LLC
摘要： A qubit device includes an elongated thin film uninterrupted by Josephson junctions, a quantum device in electrical contact with a proximal end of the elongated thin film, and a ground plane that is co-planar with the elongated thin film and is in electrical contact with a distal end of the elongated thin film, in which the thin film, the quantum device, and the ground plane comprise a material that is superconducting at a designed operating temperature.
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公开(公告)号：US10605655B2
公开(公告)日：2020-03-31
申请号：US15736381
申请日：2016-06-15
发明人： Nobuyuki Zen , Yasunori Mawatari , Go Fujii , Nobuyuki Yoshikawa
摘要： Provided are a photon detection device and a photon detection method being practical, capable of performing photon detection in which no afterpulse is generated and generation of a dark count is suppressed, and capable of obtaining a high counting rate with low jitter. The photon detection device of the present invention includes: a photon detection section having a long plate-shaped superconducting stripline whose plate surface is a photon detection surface, and a bias current supply section supplying a bias current to the superconducting stripline; and a single flux quantum comparator circuit capable of detecting magnetic flux scattered from the superconducting stripline upon photon detection.
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