公开(公告)号：US20240095564A1

公开(公告)日：2024-03-21

申请号：US17932656

申请日：2022-09-15

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Devin Underwood ,  Jiri Stehlik ,  Oliver Dial ,  David Lokken-Toyli

IPC分类号： G06N10/40 ,  H01L27/18 ,  H01L39/04 ,  H01L39/06 ,  H01L39/12

CPC分类号： G06N10/40 ,  H01L27/18 ,  H01L39/04 ,  H01L39/06 ,  H01L39/12

摘要： A quantum circuit device includes a qubit chip including a plurality of qubits and a plurality of flux tunable couplers. A plurality of fixed frequency qubits are arranged in in a lattice structure, wherein each pair of the plurality of fixed frequency qubits is coupled to one flux tunable coupler. A wiring layer is coupled to the qubit chip, and the wiring layer includes a loop constructed of a superconducting material that is inductively coupled to the flux tunable couplers. A flux bias line is constructed of a superconducting material that is different than the superconducting material of the loop, wherein the flux bias line is inductively coupled to both the loop and the flux tunable couplers.

公开(公告)号：US11659777B2

公开(公告)日：2023-05-23

申请号：US16464501

申请日：2016-11-29

申请人： Korea Institute of Machinery & Materials

发明人： Kook Chae Chung ,  Seong Hoon Kang ,  Young Seok Oh ,  Mahipal Ranot ,  Se Hoon Jang ,  Kiran Prakash Shinde

IPC分类号： H01L39/12 ,  H01L39/24

CPC分类号： H01L39/12 ,  H01L39/2403

摘要： According to an exemplary embodiment of the present invention, provided is a method for manufacturing a superconductor including magnesium diboride, the method including: a first mixture preparation step of preparing a first mixture including a boron powder and a liquid chlorinated hydrocarbon compound; a second mixture preparation step of preparing a second mixture including the first mixture and a magnesium powder; a molded body manufacturing step of manufacturing a molded body by pressurizing the second mixture; and a sintering step of sintering the molded body to manufacture a superconductor including magnesium diboride.

公开(公告)号：US20190148848A1

公开(公告)日：2019-05-16

申请号：US16136124

申请日：2018-09-19

申请人： PsiQuantum

发明人： Faraz Najafi ,  Qiaodan Jin Stone

IPC分类号： H01R4/68 ,  H01L39/12 ,  H01B12/14

CPC分类号： H01R4/68 ,  H01B12/14 ,  H01L27/18 ,  H01L39/12 ,  H01L39/16 ,  H03K19/195

摘要： The various embodiments described herein include methods, devices, and systems for fabricating and operating superconducting circuits. In one aspect, an electric circuit includes: (1) a first superconducting component having a first terminal, a second terminal, and a constriction region between the first terminal and the second terminal; (2) a second superconducting component having a third terminal and a fourth terminal; and (3) a first electrically-insulating component that thermally couples the first superconducting component and the second superconducting component such that heat produced at the constriction region is transferred through the first component to the second superconducting component.

公开(公告)号：US20180315523A1

公开(公告)日：2018-11-01

申请号：US15964723

申请日：2018-04-27

申请人： David SMATHERS ,  Paul AIMONE

发明人： David SMATHERS ,  Paul AIMONE

IPC分类号： H01B12/10 ,  H01L39/12 ,  H01L39/14 ,  H01B12/06 ,  H01L39/24

CPC分类号： H01B12/10 ,  H01B12/06 ,  H01L39/12 ,  H01L39/14 ,  H01L39/2403 ,  H01L39/2406 ,  H01L39/2409 ,  Y02E40/642 ,  Y02E40/644

摘要： In various embodiments, superconducting wires incorporate diffusion barriers composed of Ta alloys that resist internal diffusion and provide superior mechanical strength to the wires.

公开(公告)号：US20180212136A1

公开(公告)日：2018-07-26

申请号：US15879291

申请日：2018-01-24

申请人： Bruker OST LLC

发明人： Michael Field ,  Hanping Miao ,  Carlos Sanabria ,  Jeffrey Parrell

IPC分类号： H01L39/24 ,  H01L39/12 ,  H01B12/02

CPC分类号： H01L39/2409 ,  H01B12/02 ,  H01L39/12 ,  H01L39/2403

摘要： A new heat treatment for Internal-Tin Nb3Sn strands is described. The heat treatment uses Nausite membranes to decrease the volume fraction of the η phase and therefore minimize its liquefaction—ultimately resulting in better connected Nb3Sn. The heat treatment requires only one stage aside from the final Nb3Sn reaction stage. This heat treatment enables an increase in critical current density (at 16 T) of 28%.

公开(公告)号：US20180025775A1

公开(公告)日：2018-01-25

申请号：US15218031

申请日：2016-07-24

申请人： Microsoft Technology Licensing, LLC

发明人： Thomas F. Ambrose

IPC分类号： G11C11/44 ,  H01L39/16 ,  H01L39/12 ,  H01L39/22 ,  H01L39/02

CPC分类号： G11C11/44 ,  G11C11/161 ,  H01L39/025 ,  H01L39/12 ,  H01L39/16 ,  H01L39/223 ,  H01L43/08 ,  H01L43/10

摘要： Examples described in this disclosure relate to a memory cell having a magnetic Josephson junction device with a doped magnetic layer. In one example, a memory cell including a magnetic Josephson junction (MJJ) device is provided. The MJJ device may include at least a first layer formed above a second layer and a third layer formed below the second layer, where the first layer is a free magnetic layer, the second layer is a non-magnetic layer, where the third layer is a fixed magnetic layer. The free magnetic layer may comprise a magnetic alloy doped with at least one of Vanadium, Zirconium, Molybdenum, or Hafnium, and the fixed magnetic layer may comprise an un-doped second magnetic alloy.

公开(公告)号：US20170279028A1

公开(公告)日：2017-09-28

申请号：US15077683

申请日：2016-03-22

申请人： Dong Zhao ,  George Jin Zhao

发明人： Dong Zhao ,  George Jin Zhao

IPC分类号： H01L39/12 ,  C01F15/00

CPC分类号： H01L39/12 ,  C01F15/00 ,  C01F17/00 ,  C01P2002/76 ,  C01P2002/77 ,  C01P2006/40 ,  H01L39/005

摘要： This disclosure will describe a novel finding and make the claim for the first time on a group of old compounds and formulated new compounds. These compounds have superconducting property at high temperatures, i.e., 151K or higher. Several compounds were prepared, though not well-purified, at around middle of 1900s. Their chemical, structural, electric and magnetic properties were studied and reported but their superconducting property has not been known and has never been exploited because the idea of type-II superconductivity was not proposed at that time. Consequently, we claim this finding as an invention even though our invention is based on the studies of the compounds' electric and magnetic properties along with their crystallographic features from the previous publications. The experiments to further verify their high temperature superconductivity require the utilization of sophisticated facilities on synthesizing highly pure compounds and the deregulation from government security authorities on purchasing the starting materials.

公开(公告)号：US09595656B2

公开(公告)日：2017-03-14

申请号：US14850634

申请日：2015-09-10

申请人： Hypres Inc.

发明人： Sergey K. Tolpygo

IPC分类号： H01L29/06 ,  H01L39/24 ,  H01L39/02 ,  H01L39/12 ,  H01L39/22 ,  H01L27/18

CPC分类号： H01L27/18 ,  H01L39/025 ,  H01L39/12 ,  H01L39/223 ,  H01L39/2406 ,  H01L39/249 ,  H01L39/2493

摘要： An improved microfabrication technique for Josephson junctions in superconducting integrated circuits, based on the use of a double-layer lithographic mask for partial anodization of the side-walls and base electrode of the junctions. The top layer of the mask is a resist material, and the bottom layer is a dielectric material chosen so to maximize adhesion between the resist and the underlying superconducting layer, be etch-compatible with the underlying superconducting layer, and be insoluble in the resist and anodization processing chemistries. The superconductor is preferably niobium, under a silicon dioxide layer, with a conventional photoresist or electron-beam resist as the top layer. This combination results in a substantial increase in the fabrication yield of high-density superconducting integrated circuits, increase in junction uniformity and reduction in defect density. A dry etch more compatible with microlithography may be employed.

摘要翻译： 基于使用双层光刻掩模对结点的侧壁和基极进行部分阳极氧化的改进的超导集成电路中约瑟夫森结的微细加工技术。 掩模的顶层是抗蚀剂材料，并且底层是选择的电介质材料，以使抗蚀剂和下面的超导层之间的粘合力最大化，与下面的超导层进行蚀刻兼容，并且不溶于抗蚀剂， 阳极氧化处理化学品。 超导体优选是在二氧化硅层下的铌，其中常规的光致抗蚀剂或电子束抗蚀剂作为顶层。 这种组合导致高密度超导集成电路的制造产量的显着增加，结点均匀性的增加和缺陷密度的降低。 可以采用与微光刻相容的干蚀刻。

公开(公告)号：US09577175B1

公开(公告)日：2017-02-21

申请号：US14698442

申请日：2015-04-28

申请人： NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

发明人： Sae Woo Nam ,  Burm Baek ,  Francesco Marsili ,  Varun Verma

IPC分类号： H01L39/10 ,  H01L39/02 ,  G01J1/42

CPC分类号： H01L39/02 ,  G01J1/42 ,  H01L39/10 ,  H01L39/12 ,  H01L39/24

摘要： An apparatus includes a base layer; and a superconducting nanowire disposed on the base layer in a continuous meander pattern and including an amorphous metal-metalloid alloy such that the apparatus is configured to detect single photons, and the continuous meander pattern includes: a plurality of parallel line segments; and a plurality of curved segments, wherein adjacent parallel line segments are joined by a curved segment. A method for making an apparatus for detecting single photons includes forming a base layer; forming a superconducting layer on the base layer; patterning the superconducting layer; and forming a continuous meander pattern from the superconducting layer, the continuous meander pattern includes a plurality of parallel line segments; and a plurality of curved segments, wherein adjacent parallel line segments are joined by a curved segment; and forming a dielectric layer on the continuous meander pattern, the dielectric layer including a dielectric material that is substantially transparent to a predetermined photon wavelength, wherein the apparatus is configured to detect single photons.

摘要翻译： 一种装置包括：基层; 以及超导纳米线，其以连续的曲折图案设置在基底层上并且包括无定形金属 - 准金属合金，使得该装置被配置为检测单个光子，并且连续曲折图案包括：多个平行线段; 以及多个弯曲段，其中相邻的平行线段通过弯曲段连接。 用于制造用于检测单个光子的装置的方法包括形成基层; 在基层上形成超导层; 图案化超导层; 以及从所述超导层形成连续曲折图案，所述连续曲折图案包括多个平行线段; 以及多个弯曲段，其中相邻的平行线段通过弯曲段连接; 以及在所述连续弯曲图案上形成电介质层，所述电介质层包括对预定光子波长基本透明的介电材料，其中所述装置被配置为检测单个光子。

公开(公告)号：US20160035470A1

公开(公告)日：2016-02-04

申请号：US14818002

申请日：2015-08-04

申请人： THE TRUSTEES OF PRINCETON UNIVERSITY

发明人： Ali Yazdani ,  Andrei Bernevig

IPC分类号： H01F6/06

CPC分类号： H01L39/22 ,  B82Y10/00 ,  G06N99/002 ,  H01F1/0072 ,  H01L39/12

摘要： A magnetic topological nanowire structure comprises a superconductor and a quasi-1D magnetic nanowire. The quasi-1D magnetic nanowire is coupled to or embedded in the superconductor to produce a self-contained interaction resulting in a spatially separated pair of Majorana fermions. The pair of Majorana fermions corresponds to the topological superconductor and each of the pair of the Majorana fermions are localized near a respective endpoint of the nanowire.

摘要翻译： 磁拓扑纳米线结构包括超导体和准1D磁纳米线。 准1D磁纳米线与超导体耦合或嵌入超导体中以产生独立的相互作用，从而产生空间上分离的马萨诸塞州费米子对。 一对Majorana费米子对应于拓扑超导体，并且一对Majorana费米子中的每一个都位于纳米线的相应端点附近。