公开(公告)号：US12022749B2

公开(公告)日：2024-06-25

申请号：US16808991

申请日：2020-03-04

申请人： International Business Machines Corporation

发明人： Rasit Onur Topaloglu ,  Vivekananda P. Adiga ,  Martin O. Sandberg

IPC分类号： H10N69/00 ,  H10N60/12 ,  H10N60/80 ,  H10N60/30 ,  H10N60/84

CPC分类号： H10N69/00 ,  H10N60/12 ,  H10N60/805 ,  H10N60/30 ,  H10N60/84

摘要： Devices, systems, and/or methods that can facilitate local heating of a superconducting flux biasing loop are provided. According to an embodiment, a device can comprise a substrate having a superconducting flux bias circuit comprising a biasing loop coupled to a flux controlled qubit device. The device can further comprise a heating device coupled to the biasing loop.

公开(公告)号：US12015383B2

公开(公告)日：2024-06-18

申请号：US17150889

申请日：2021-01-15

申请人： PSIQUANTUM CORP.

发明人： Faraz Najafi ,  Syrus Ziai ,  Qiaodan Jin Stone

IPC分类号： H03F19/00 ,  H10N60/30 ,  H10N69/00 ,  H10N60/85

CPC分类号： H03F19/00 ,  H10N60/30 ,  H10N69/00 ,  H10N60/85

摘要： A system includes a plurality of superconducting wires connected in parallel with one another. The plurality of superconducting wires includes a first superconducting wire and a second superconducting wire. The plurality of superconducting wires are configured to, while receiving a bias current provided to the parallel combination of the plurality of superconducting wires, operate in a superconducting state in the absence of a trigger current. The first superconducting wire is configured to, while receiving the bias current, transition to a non-superconducting state in response to receiving the trigger current. The second superconducting wire is configured to, while receiving the bias current, transition to a non-superconducting state in response to the first superconducting wire transitioning to the non-superconducting state.

公开(公告)号：US11980105B2

公开(公告)日：2024-05-07

申请号：US17240965

申请日：2021-04-26

申请人： PsiQuantum Corp. ,  Government of the United States of America, as Represented by the Secretary of Commerce

发明人： Faraz Najafi ,  Qiaodan Jin Stone ,  Adam Nykoruk McCaughan

IPC分类号： H01F6/04 ,  H10N60/30 ,  H10N60/84

CPC分类号： H10N60/30 ,  H01F6/04 ,  H10N60/84

摘要： The various embodiments described herein include methods, devices, and systems for operating superconducting circuits. In one aspect, an electric circuit includes: (1) a superconductor component having a first terminal at a first end and a second terminal at a second end; (2) a gate component thermally-coupled to the superconductor component at a first location between the first terminal and the second terminal, where the gate component is thermally-coupled via a first section of the gate component; and where the gate component has a smallest width at the first section so as to focus resistive heating toward the superconductor component.

公开(公告)号：US11793090B1

公开(公告)日：2023-10-17

申请号：US17826088

申请日：2022-05-26

申请人： PsiQuantum Corp.

发明人： Faraz Najafi

IPC分类号： H10N60/84 ,  H10N69/00 ,  H10N60/30

CPC分类号： H10N69/00 ,  H10N60/30

摘要： An electronic component having an asymmetric impedance is provided. The component includes first, second and third branches that connect at a common node. The component includes a first portion of superconducting material disposed along the first branch and a second portion of superconducting material disposed along the second branch. The component includes a first device disposed along the first branch and configured to transition the second portion of the superconducting material to a non-superconducting state when a current between a first terminal of the first device and a second terminal of the first device exceeds a first threshold value and a second device disposed along the second branch and configured to transition the first portion of the superconducting material to a non-superconducting state when a current between a first terminal of the second device and a second terminal of the second device exceeds a second threshold value.

公开(公告)号：US20230154639A1

公开(公告)日：2023-05-18

申请号：US17917669

申请日：2021-02-11

申请人： University of Pittsburgh - Of the Commonwealth System of Higher Education

发明人： Jeremy Levy

IPC分类号： G21K5/04 ,  H01J37/317 ,  H01J37/28 ,  H01J37/147 ,  H10N52/01 ,  H10N60/30 ,  H10N60/01 ,  H10N70/20 ,  H10N70/00

CPC分类号： G21K5/04 ,  H01J37/3174 ,  H01J37/28 ,  H01J37/147 ,  H10N52/01 ,  H10N60/30 ,  H10N60/01 ,  H10N70/257 ,  H10N70/041 ,  H01J2237/004

摘要： Described is a method comprising directing an ultra-low voltage electron beam to a surface of a first insulating layer. The first insulating layer is disposed on a second insulating layer. The method includes modifying, by the application of the ultra-low voltage electron beam, the surface of the first insulating layer to selectively switch an interface between a first state having a first electronic property and a second state having a second electronic property.

公开(公告)号：US20230148267A1

公开(公告)日：2023-05-11

申请号：US17838917

申请日：2022-06-13

申请人： PsiQuantum Corp.

发明人： Faraz Najafi ,  Qiaodan Jin Stone

IPC分类号： H03K19/195 ,  G01J1/44 ,  H10N60/30 ,  H10N60/84

CPC分类号： H03K19/195 ,  G01J1/44 ,  H10N60/30 ,  H10N60/84 ,  G01J2001/442

摘要： A programmable circuit includes a superconducting component arranged in a multi-dimensional array of alternating narrow and wide portions. The programmable circuit further includes a plurality of heat sources, each heat source configured to selectively provide heat to a respective narrow portion sufficient to transition the respective narrow portion from a superconducting state to a non-superconducting state. The programmable circuit further includes a plurality of electrical terminals, each electrical terminal coupled to a respective wide portion of the multi-dimensional array.