公开(公告)号：US20150032994A1

公开(公告)日：2015-01-29

申请号：US14340303

申请日：2014-07-24

Applicant: D-WAVE SYSTEMS INC.

Inventor： Fabian Ariel Chudak ,  Christopher B. Rich ,  Paul I. Bunyk

IPC: G06N99/00 ,  G06F15/76

CPC classification number: G06N99/002 ,  B82Y10/00

Abstract: Techniques for improving the performance of a quantum processor are described. Some techniques employ improving the processor topology through design and fabrication, reducing intrinsic/control errors, reducing thermally-assisted errors and methods of encoding problems in the quantum processor for error correction.

Abstract translation: 描述了用于改善量子处理器的性能的技术。 一些技术通过设计和制造来改进处理器拓扑，减少内在/控制误差，减少热辅助误差和量子处理器中编码问题的方法进行纠错。

公开(公告)号：US20150032991A1

公开(公告)日：2015-01-29

申请号：US14340291

申请日：2014-07-24

Applicant: D-WAVE SYSTEMS INC.

Inventor： Trevor Michael Lanting ,  Colin Enderud ,  Elena Tolkacheva

IPC: G06F15/82 ,  G06N99/00

CPC classification number: G06N99/002

Abstract: Increasing the energy scale of a quantum processor improves its performance. Energy scale of a quantum processor may be increased by increasing the coupling strength of communicatively coupled superconducting devices comprised in the quantum processor. Configuring the physical dimensions of communicatively coupled superconducting devices such that an intentional direct coupling is induced between a pair of superconducting devices communicatively coupled by a coupling device may controllably add an additional mutual inductance to the mutual inductance of the pair of superconducting devices. Furthermore, reducing the beta parameter of a coupling device may improve the tunability of the coupling device. The combined effects of improved tunability of the coupling devices and the increased coupling strength between superconducting devices communicatively coupled by respective coupling devices comprised in the quantum processor may thus improve the performance of the quantum processor.

Abstract translation: 增加量子处理器的能量规格提高了其性能。 可以通过增加包含在量子处理器中的通信耦合的超导装置的耦合强度来增加量子处理器的能量级。 配置通信耦合的超导装置的物理尺寸，使得在由耦合装置通信耦合的一对超导装置之间引起有意的直接耦合可以可控制地向一对超导装置的互感增加额外的互感。 此外，降低耦合装置的β参数可以提高耦合装置的可调性。 耦合器件的改进的可调谐性以及通过由包含在量子处理器中的相应耦合器件通信耦合的超导器件之间增加的耦合强度的组合效应可以改善量子处理器的性能。

公开(公告)号：US20140344322A1

公开(公告)日：2014-11-20

申请号：US14280204

申请日：2014-05-16

Applicant: D-Wave Systems Inc.

Inventor： Mani Ranjbar

IPC: G06N99/00 ,  G06F1/02

CPC classification number: G06N99/002 ,  B82Y10/00 ,  G06F17/11

Abstract: Computational techniques for mapping a continuous variable objective function into a discrete variable objective function problem that facilitate determining a solution of the problem via a quantum processor are described. The modified objective function is solved by minimizing the cost of the mapping via an iterative search algorithm.

Abstract translation: 描述了将连续变量目标函数映射到便于通过量子处理器确定问题的解的离散变量目标函数问题的计算技术。 通过迭代搜索算法最小化映射的成本来解决修改后的目标函数。

公开(公告)号：US20140246763A1

公开(公告)日：2014-09-04

申请号：US14109604

申请日：2013-12-17

Applicant: D-Wave Systems Inc.

Inventor： Paul I. Bunyk

IPC: H01L21/66 ,  H01L39/02 ,  H01L27/18 ,  H01L39/24

CPC classification number: H01L27/18 ,  G01R31/2884 ,  G01R31/2891 ,  H01L24/05 ,  H01L24/13 ,  H01L24/81 ,  H01L39/045 ,  H01L39/24 ,  H01L2224/0401 ,  H01L2224/05008 ,  H01L2224/05023 ,  H01L2224/05179 ,  H01L2224/05548 ,  H01L2224/05568 ,  H01L2224/05573 ,  H01L2224/05611 ,  H01L2224/13007 ,  H01L2224/13111 ,  H01L2224/13116 ,  H01L2224/13144 ,  H01L2224/13147 ,  H01L2224/13163 ,  H01L2224/13176 ,  H01L2224/13183 ,  H01L2224/13562 ,  H01L2224/1357 ,  H01L2224/13582 ,  H01L2224/136 ,  H01L2224/13611 ,  H01L2224/16238 ,  H01L2224/81191 ,  H01L2224/81192 ,  H01L2224/81815 ,  H01L2224/97 ,  H01L2924/15787 ,  H01L2924/35121 ,  H01L2924/00014 ,  H01L2924/014 ,  H01L2924/01076 ,  H01L2224/81 ,  H01L2924/00

Abstract: Superconductive interconnection structures providing continuous, uninterrupted superconducting signal paths between a superconducting chip and a superconducting chip carrier are described. The superconductive interconnection structures employ superconducting solder bumps and pillars of Under Bump Metal (“UBM”). The superconductive interconnection structures are employed in a two-stage solder bumping process in which the superconducting chip is first bonded to a testing module for screening and then bonded to a chip packaging module for operation. Either the testing module or the chip packaging module, or both, may include a multi-chip module for carrying multiple superconducting chips simultaneously.

Abstract translation: 描述了在超导芯片和超导芯片载体之间提供连续的，不间断的超导信号路径的超导互连结构。 超导互连结构采用超导焊料凸块和下凸块金属（“UBM”）的支柱。 超导互连结构用于两级焊料凸起工艺中，其中超导芯片首先结合到测试模块进行筛选，然后结合到芯片封装模块进行操作。 测试模块或芯片封装模块或两者都可以包括用于同时承载多个超导芯片的多芯片模块。

公开(公告)号：US20140137571A1

公开(公告)日：2014-05-22

申请号：US14086697

申请日：2013-11-21

Applicant: D-Wave Systems Inc.

Inventor： Jacob Craig Petroff ,  Richard G. Harris

IPC: B01D8/00

CPC classification number: B01D8/00 ,  F25B9/10 ,  F25B9/12 ,  F25B9/145 ,  F25D19/006

Abstract: Systems and methods for improving the performance of dilution refrigeration systems are described. Filters and traps employed in the helium circuit of a dilution refrigerator may be modified to improve performance. Some traps may be designed to harness cryocondensation as opposed to cryoadsorption. A cryocondensation trap employs a cryocondensation surface having a high thermal conductivity and a high specific heat with a binding energy that preferably matches at least one contaminant but does not match helium. Multiple traps may be coupled in series in the helium circuit, with each trap designed to trap a specific contaminant or set of contaminants. Both cryocondensation and cryoadsorption may be exploited among multiple traps.

Abstract translation: 描述了用于改善稀释制冷系统性能的系统和方法。 可以修改在稀释制冷机的氦回路中使用的过滤器和捕集器，以改善性能。 一些陷阱可能被设计为利用低温冷冻而不是冷冻吸收。 低温冷凝阱采用具有高热导率和高比热的冷凝表面，其结合能优选与至少一种污染物匹配但不匹配氦。 多个陷阱可以串联耦合在氦气回路中，每个捕集阱被设计成捕获特定的污染物或一组污染物。 可以在多个陷阱中利用冷冻和低温吸收。

公开(公告)号：US20140097405A1

公开(公告)日：2014-04-10

申请号：US14050062

申请日：2013-10-09

Applicant: D-Wave Systems Inc.

Inventor： Paul Bunyk

IPC: H01L49/00

CPC classification number: H01L49/006 ,  B82Y10/00 ,  G06N99/002 ,  H01L31/035209 ,  H01L31/035218 ,  H01L39/22

Abstract: Quantum processor architectures employ unit cells tiled over an area. A unit cell may include first and second sets of qubits where each qubit in the first set crosses at least one qubit in the second set. Each unit cell is positioned proximally adjacent at least one other unit cell. Within each unit cell, at least one qubit is longitudinally shifted with respect to at least one other qubit such that the longitudinally-shifted qubit crosses at least one qubit in a proximally adjacent unit cell. Communicative coupling between qubits is realized through respective intra-cell and inter-cell coupling devices. The longitudinal shifting of qubits and resultant crossing of qubits in proximally adjacent unit cells enables quantum processor architectures that can be better suited to solve certain problems.

Abstract translation: 量子处理器架构采用平铺在一个区域上的单位单元。 单元单元可以包括第一组和第二组量子位，其中第一组中的每个量子位与第二组中的至少一个量子位交叉。 每个单位单元位于邻近至少一个其他单位单元的近侧。 在每个单元单元内，至少一个量子位相对于至少一个其他量子位纵向偏移，使得纵向移位的量子位在近端相邻的单位单元中交叉至少一个量子位。 量子位之间的通信耦合通过相应的小区内和小区间耦合设备来实现。 量子位的纵向移位和邻近的相邻单位单元中量子位的交叉使量子处理器架构更适合于解决某些问题。

公开(公告)号：US20130313526A1

公开(公告)日：2013-11-28

申请号：US13958339

申请日：2013-08-02

Applicant: D-Wave Systems Inc.

Inventor： Richard G. Harris ,  Andrew J. Berkley ,  Jan Johansson ,  Mark Johnson ,  Mohammad Amin ,  Paul I. Bunyk

IPC: G06N99/00 ,  H01L39/22

CPC classification number: H01L39/223 ,  B82Y10/00 ,  G06N99/002 ,  H01L27/18

Abstract: Apparatus and methods enable active compensation for unwanted discrepancies in the superconducting elements of a quantum processor. A qubit may include a primary compound Josephson junction (CJJ) structure, which may include at least a first secondary CJJ structure to enable compensation for Josephson junction asymmetry in the primary CJJ structure. A qubit may include a series LC-circuit coupled in parallel with a first CJJ structure to provide a tunable capacitance. A qubit control system may include means for tuning inductance of a qubit loop, for instance a tunable coupler inductively coupled to the qubit loop and controlled by a programming interface, or a CJJ structure coupled in series with the qubit loop and controlled by a programming interface.

公开(公告)号：US20130217580A1

公开(公告)日：2013-08-22

申请号：US13707210

申请日：2012-12-06

Applicant: D-Wave Systems Inc.

Inventor： Murray C. Thom ,  Sergey Uchaykin ,  Thomas Mahon ,  David Pires ,  Peter Spear ,  Jacob Craig Petroff

IPC: H01P1/202

CPC classification number: H01P1/202

Abstract: Adaptations and improvements to tubular metal powder filters include employing non-circular cross sectional geometries, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace carried on a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.

Abstract translation: 对管状金属粉末过滤器的适应和改进包括采用非圆形横截面几何形状，将内部导体对准轴线，将导电线替换为承载在印刷电路板上的导电迹线，将多个过滤器组合在单个共同外部导电 住房和采用曲折和其他非平行信号路径。 各种适应和改进旨在适应单端和差分信号，以及超导和非超导应用。

公开(公告)号：US20040173792A1

公开(公告)日：2004-09-09

申请号：US10801335

申请日：2004-03-15

Applicant: D-Wave Systems, Inc.

Inventor： Alexandre Blais ,  Jermey P. Hilton ,  Alexandre M. Zagoskin

IPC: H01L029/06

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

Abstract: A circuit comprising a superconducting qubit and a resonant control system that is characterized by a resonant frequency. The resonant frequency of the control system is a function of a bias current. The circuit further includes a superconducting mechanism having a capacitance or inductance. The superconducting mechanism coherently couples the superconducting qubit to the resonant control system. A method for entangling a quantum state of a first qubit with the quantum state of a second qubit. In the method, a resonant control system, which is capacitively coupled to the first and second qubit, is tuned to a first frequency that corresponds to the energy differential between the lowest two potential energy levels of the first qubit. The resonant control system is then adjusted to a second frequency corresponding to energy differential between the lowest two potential energy levels of the second qubit.

公开(公告)号：US20030063426A1

公开(公告)日：2003-04-03

申请号：US10232137

申请日：2002-08-29

Applicant: D-Wave Systems, Inc.

Inventor： Anatoly Yu Smirnov ,  Sergey Rashkeev ,  Alexandre M. Zagoskin ,  Jeremy P. Hilton

IPC: H01H047/00

CPC classification number: G02F1/01 ,  B82Y10/00 ,  G02F1/0126 ,  G02F1/09 ,  G02F1/313 ,  G02F2203/15 ,  G06N10/00

Abstract: An optical device having an optical microsphere. Resonant electromagnetic radiation is trapped in the microsphere and manipulated with externally applied electric and magnetic fields to control polarization components of the excited energy within the microsphere. The optical microsphere can be used as a signal inverter. In the single photon regime, the optical microsphere can be used as a mechanism for entangling qubit states coded by the polarization states of whispering gallery modes excited in the microsphere. Furthermore, the device can be used as a switch for the absorption or reflection of photons in response to control photons.

Abstract translation: 具有光学微球的光学装置。 谐振电磁辐射被捕获在微球中，并通过外部施加的电场和磁场进行操纵，以控制微球内的激发能的偏振分量。 光学微球可用作信号逆变器。 在单光子状态下，光学微球可以用作通过在微球中激发的耳语画廊模式的极化状态编码的量子位状态的机制。 此外，该装置可以用作用于响应于控制光子的光子的吸收或反射的开关。