公开(公告)号：US20040140537A1

公开(公告)日：2004-07-22

申请号：US10746992

申请日：2003-12-24

Applicant: D-Wave Systems, Inc.

Inventor： Evgeni Il'ichev ,  Miles F.H. Steininger

IPC: H01L039/00

CPC classification number: G06N99/002 ,  B82Y10/00 ,  H01L27/18 ,  Y10S977/933

Abstract: The present invention generally involves an extra-substrate control system comprising a first substrate, attached to which is at least one superconducting structure, and a second substrate, connected to which is at least one element of circuitry, wherein the superconducting structure and the circuitry interact, so that a change in a state of the superconducting structure can be detected by the circuitry. The present invention also provides a quantum computing apparatus comprising a first substrate, attached to which is one or more layers of material, at least one of which is a superconducting material, a second substrate, deposited on which is a flux shield and on the flux shield is at least one element of circuitry, wherein the superconducting material and the second substrate are separated by a mean distance that is small enough to permit coupling between the element of circuitry and the superconducting material.

Abstract translation: 本发明通常涉及一种外部衬底控制系统，其包括连接到其上的至少一个超导结构的第一衬底和连接到其上的至少一个电路元件的第二衬底，其中超导结构和电路相互作用 ，使得可以通过电路检测超导结构的状态的变化。 本发明还提供了一种量子计算设备，其包括第一衬底，附接到其上的是一层或多层材料，其中至少一层是超导材料，沉积在其上的是第二衬底，其上形成有焊剂 屏蔽是电路的至少一个元件，其中超导材料和第二衬底被分开一个足够小以允许电路元件和超导材料之间的耦合的平均距离。

公开(公告)号：US20030146430A1

公开(公告)日：2003-08-07

申请号：US10351632

申请日：2003-01-23

Applicant: D-Wave Systems, Inc.

Inventor： Alexander Tzalenchuk ,  Zdravko Ivanov ,  Jeremy P. Hilton

IPC: H01L029/06

CPC classification number: G06N99/002 ,  B82Y10/00 ,  H01L27/18 ,  Y10S977/933

Abstract: A finger SQUID qubit device and method for performing quantum computation with said device is disclosed. A finger SQUID qubit device includes a superconducting loop and one or more superconducting fingers, wherein the fingers extend to the interior of said loop. Each finger has a mesoscopic island at the tip, separated from the rest of the finger by a Josephson junction. A system for performing quantum computation with the finger SQUID qubit device includes a mechanism for initializing, entangling, and reading out the qubits. The mechanism may involve passing a bias current across the leads of the superconducting loop and a mechanism for measuring a potential change across the leads of the superconducting loop. Furthermore, a control system includes a mechanism for addressing specific qubits in a quantum register of finger SQUID devices.

Abstract translation: 公开了一种用于与所述设备执行量子计算的手指SQUID量子比特装置和方法。 手指SQUID量子比特装置包括超导环和一个或多个超导指，其中手指延伸到所述环的内部。 每个手指在尖端具有一个介观岛，通过约瑟夫逊结与手指的其余部分分开。 用于使用手指SQUID量子位装置进行量子计算的系统包括用于初始化，纠缠和读出量子位的机构。 该机理可以包括使超导回路的引线上的偏置电流通过，以及用于测量跨越超导环路的引线的电位变化的机构。 此外，控制系统包括用于寻址手指SQUID设备的量子寄存器中的特定量子位的机制。

公开(公告)号：US20020179937A1

公开(公告)日：2002-12-05

申请号：US09875776

申请日：2001-06-05

Applicant: D-Wave Systems, Inc.

Inventor： Zdravko Ivanov ,  Alexander Tzalentchuk ,  Jeremy P. Hilton ,  Alexander Maassen van de Brink

IPC: H01L031/0336

CPC classification number: G06N99/002 ,  B82Y10/00 ,  H01L39/225 ,  Y10S977/70 ,  Y10S977/812 ,  Y10S977/838 ,  Y10S977/933 ,  Y10S977/96

Abstract: Quantum computing systems and methods that use opposite magnetic moment states read the state of a qubit by applying current through the qubit and measuring a Hall effect voltage across the width of the current. For reading, the qubit is grounded to freeze the magnetic moment state, and the applied current is limited to pulses incapable of flipping the magnetic moment. Measurement of the Hall effect voltage can be achieved with an electrode system that is capacitively coupled to the qubit. An insulator or tunnel barrier isolates the electrode system from the qubit during quantum computing. The electrode system can include a pair of electrodes for each qubit. A readout control system uses a voltmeter or other measurement device that connects to the electrode system, a current source, and grounding circuits. For a multi-qubit system, selection logic can select which qubit or qubits are read.

Abstract translation: 使用相反磁矩状态的量子计算系统和方法通过在电流上施加电流并测量电流宽度上的霍尔效应电压来读取量子位的状态。 为了读取，量子位接地，以冻结磁矩状态，施加的电流限于不能翻转磁矩的脉冲。 可以通过电容耦合到量子位的电极系统来实现霍尔效应电压的测量。 绝缘体或隧道势垒在量子计算过程中将电极系统与量子位隔离。 电极系统可以包括用于每个量子位的一对电极。 读出控制系统使用连接到电极系统，电流源和接地电路的电压表或其它测量装置。 对于多量子位系统，选择逻辑可以选择读取哪个量子位或量子位。

公开(公告)号：US20020177529A1

公开(公告)日：2002-11-28

申请号：US10117696

申请日：2002-04-04

Applicant: D-Wave Systems Inc.

Inventor： Alexey V. Ustinov

IPC: H01B001/00

CPC classification number: G06N99/002 ,  B82Y10/00 ,  H01L39/223 ,  Y10S977/933

Abstract: A method and apparatus for inserting fluxons into an annular Josephson junction is disclosed. Fluxon injection according to the present invention is based on local current injection into one of the superconducting electrodes of the junction. By choosing an appropriate value for the injection current, which depends upon the spacing between injecting leads among other factors, the residual fluxon pinning can be reduced to a very small level. Fluxon injection according to the present invention provides for fully controlling the trapping of individual fluxons in annular Josephson junctions and is reversible to a state of zero fluxons without heating the Josephson above its critical temperature. Fluxon injection according to the present invention can be used for preparing the working state of fluxon oscillators, clock references, radiation detectors, and shaped junctions that may be used as qubits for quantum computing.

Abstract translation: 公开了一种用于将flux子插入环形约瑟夫逊结的方法和装置。 根据本发明的通量注入基于局部电流注入到结的一个超导电极中。 通过选择注入电流的适当值，其取决于注入引线之间的间隔以及其他因素，剩余通量钉扎可以降低到非常小的水平。 根据本发明的氟利昂注射提供了完全控制环形约瑟夫逊结中的各个物质的捕获，并且可逆地到零物质的状态，而不使约瑟夫森超过其临界温度。 根据本发明的氟利昂注射可用于制备可用作量子计算量子位的物理振荡器，时钟参考，辐射检测器和成形结的工作状态。

公开(公告)号：US12299593B2

公开(公告)日：2025-05-13

申请号：US17154210

申请日：2021-01-21

Applicant: D-WAVE SYSTEMS INC.

Inventor： Mohammad H. Amin

IPC: G06N5/04 ,  G06N10/60 ,  G06N20/00

Abstract: A quantum annealing schedule for a computational problem can be adjusted by methods and systems involving one or more processors. The one or more processors proceed by receiving a representation of the computation problem, the representation including a plurality of problem values. These problem values are transformed based on a plurality of trained parameters of a machine learning model to generate at least a portion of an annealing schedule including at least one annealing parameter. Instructions are transmitted to the quantum processor to cause the quantum processor to evolve from an initial state to a final state based on the computational problem and the at least a portion of an annealing schedule, the final state producing a result for the computational problem.

公开(公告)号：US12206385B2

公开(公告)日：2025-01-21

申请号：US17862605

申请日：2022-07-12

Applicant: D-WAVE SYSTEMS INC.

Inventor： Jed D. Whittaker ,  Loren J. Swenson ,  Mark H. Volkmann

IPC: H03H7/38 ,  G06N10/00 ,  H01P1/203 ,  H10N60/12

Abstract: A superconducting circuit may include a transmission line having at least one transmission line inductance, a superconducting resonator, and a coupling capacitance that communicatively couples the superconducting resonator to the transmission line. The transmission line inductance may have a value selected to at least partially compensate for a variation in a characteristic impedance of the transmission line, the variation caused at least in part by the coupling capacitance. The coupling capacitance may be distributed along the length of the transmission line. A superconducting circuit may include a transmission line having at least one transmission line capacitance, a superconducting resonator, and a coupling inductance that communicatively couples the superconducting resonator to the transmission line. The transmission line capacitance may be selected to at least partially compensate for a variation in coupling strength between the superconducting resonator and the transmission line.

公开(公告)号：US12118197B2

公开(公告)日：2024-10-15

申请号：US18205379

申请日：2023-06-02

Applicant: D-WAVE SYSTEMS INC.

Inventor： Murray C. Thom ,  Fiona L. Hanington ,  Alexander Condello ,  William W. Bernoudy ,  Melody C. Wong ,  Aidan P. Roy ,  Kelly T. R. Boothby ,  Edward D. Dahl

IPC: G06F3/04847 ,  G06F3/04817 ,  G06F16/901 ,  G06N10/00 ,  G06T11/20

CPC classification number: G06F3/04847 ,  G06F3/04817 ,  G06F16/9024 ,  G06N10/00 ,  G06T11/206 ,  G06T2200/24

Abstract: A user interface (UI), data structures and algorithms facilitate programming, analyzing, debugging, embedding, and/or modifying problems that are embedded or to be embedded on an analog processor (e.g., quantum processor), increasing computational efficiency and/or accuracy of problem solutions. The UI provides graph representations (e.g., source graph, target graph and correspondence therebetween) with nodes and edges which may map to hardware components (e.g., qubits, couplers) of the analog processor. Characteristics of solutions are advantageously represented spatially associated (e.g., overlaid or nested) with characteristics of a problem. Characteristics (e.g., bias state) may be represented by color, pattern, values, icons. Issues (e.g., broken chains) may be detected and alerts provided. Problem representations may be modified via the UI, and a computer system may autonomously generate new instances of the problem representation, update data structures, embed the new instance and cause the new instance to be executed by the analog processor.

公开(公告)号：US20240338584A1

公开(公告)日：2024-10-10

申请号：US18293559

申请日：2022-07-27

Applicant: D-WAVE SYSTEMS INC.

Inventor： Kelly T. R. Boothby

IPC: G06N10/40 ,  H10N60/12 ,  H10N69/00

CPC classification number: G06N10/40 ,  H10N60/12 ,  H10N69/00

Abstract: Topologies for analog processors may include cells comprising at least portions of qubits and couplers. Qubits and couplers may be shared among or extend across multiple cells. A cell may include four sets of partial qubits, and partial qubits may form whole qubits with partial qubits in adjacent cells. First and second sets of partial qubits may include partial qubits that extend substantially parallel to one another and along a first direction. Third and fourth sets may include partial qubits that extend substantially parallel to one another and along a second direction. Each partial qubit in the first and second sets may cross, and be substantially orthogonal to, at least one partial qubit from each of the third and fourth sets. A cell may include first and second sets of intra-cell couplers, and partial couplers that form inter-cell couplers with partial couplers in adjacent cells.

公开(公告)号：US20240248947A1

公开(公告)日：2024-07-25

申请号：US18286624

申请日：2022-03-30

Applicant: D-WAVE SYSTEMS INC.

Inventor： Hossein Sadeghi Esfahani ,  Mohsen Rahmani ,  Alex Zucca ,  William W. Bernoudy

IPC: G06F17/11

CPC classification number: G06F17/11

Abstract: Systems and methods for optimization algorithms, updating samples, and penalizing constraint violations are discussed. A method for updating samples includes receiving a problem definition with an objective function and constraint functions, an initial sample, and a value for a progress parameter. For each variable a total energy change is determined based on an objective energy change based on the sample value for the variable and one or more terms of the objective function that include the variable and a constraint energy change based on the sample value for the variable and each of the constraint functions defined by the variable. A sampling distribution is selected based on the variable type and an updated value is sampled based on the total energy change and the progress parameter. An updated sample is returned with an updated value for each variable of the set of variables. Such may improve operation of processor-based systems.

公开(公告)号：US12034404B2

公开(公告)日：2024-07-09

申请号：US17158484

申请日：2021-01-26

Applicant: D-WAVE SYSTEMS INC.

Inventor： Andrew J. Berkley ,  Loren J. Swenson ,  Mark H. Volkmann ,  Jed D. Whittaker ,  Paul I. Bunyk ,  Peter D. Spear ,  Christopher B. Rich

IPC: H03B15/00 ,  G06N10/20 ,  G06N10/40 ,  H01P7/08 ,  H01P7/10 ,  H03H7/01 ,  H10N60/12 ,  G06N10/00

CPC classification number: H03B15/003 ,  G06N10/20 ,  G06N10/40 ,  H01P7/08 ,  H01P7/105 ,  H03H7/01 ,  H10N60/12 ,  G06N10/00 ,  H03B2201/02

Abstract: A superconducting input and/or output system employs at least one microwave superconducting resonator. The microwave superconducting resonator(s) may be communicatively coupled to a microwave transmission line. Each microwave superconducting resonator may include a first and a second DC SQUID, in series with one another and with an inductance (e.g., inductor), and a capacitance in parallel with the first and second DC SQUIDs and inductance. Respective inductive interfaces are operable to apply flux bias to control the DC SQUIDs. The second DC SQUID may be coupled to a Quantum Flux Parametron (QFP), for example as a final element in a shift register. A superconducting parallel plate capacitor structure and method of fabricating such are also taught.