公开(公告)号：US09424526B2

公开(公告)日：2016-08-23

申请号：US14280204

申请日：2014-05-16

Applicant: D-Wave Systems Inc.

Inventor： Mani Ranjbar

IPC: G06F17/11 ,  G06N99/00 ,  B82Y10/00

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：US09396440B2

公开(公告)日：2016-07-19

申请号：US13796949

申请日：2013-03-12

Applicant: D-Wave Systems Inc.

Inventor： William G. Macready ,  Edward D. Dahl

IPC: G06F17/00 ,  G06N99/00 ,  B82Y10/00 ,  G06N5/04 ,  G06N5/00

CPC classification number: G06N99/002 ,  B82Y10/00 ,  G06N5/003 ,  G06N5/04

Abstract: Systems and methods to solve combinatorial problems employ a permutation network which may be modeled after a sorting network where comparators are replaced by switches that controllably determine whether inputs are swapped or are left unchanged at the outputs. A quantum processor may be used to generate permutations by the permutation network by mapping the state of each switch in the network to the state of a respective qubit in the quantum processor. In this way, a quantum computation may explore all possible permutations simultaneously to identify a permutation that satisfies at least one solution criterion. The Travelling Salesman Problem is discussed as an example of a combinatorial problem that may be solved using these systems and methods.

Abstract translation: 用于解决组合问题的系统和方法采用置换网络，其可以在分类网络之后建模，其中比较器被可控地确定输入是否被交换或在输出处保持不变的开关替代。 量子处理器可以用于通过将网络中每个交换机的状态映射到量子处理器中相应量子位的状态来通过置换网络来产生置换。 以这种方式，量子计算可以同时探索所有可能的排列以识别满足至少一个解决标准的置换。 讨论旅行销售员问题作为可以使用这些系统和方法解决的组合问题的示例。

公开(公告)号：US20160085616A1

公开(公告)日：2016-03-24

申请号：US14778478

申请日：2014-02-05

Applicant: D-Wave Systems Inc.

Inventor： Andrew J. Berkley

IPC: G06F11/10 ,  G06N99/00

CPC classification number: G06F11/0724 ,  G06F11/10 ,  G06F11/1492 ,  G06N99/002

Abstract: The effects of decoherence and/or noise in adiabatic quantum computation and quantum annealing are reduced by implementing replica coding schemes. Multiple instances of the same problem are mapped to respective subsets of the qubits and coupling devices of a quantum processor. The multiple instances are evolved simultaneously in the presence of coupling between the qubits of different instances. Quantum processor architectures that are adapted to facilitate replica coding are also described.

Abstract translation: 通过实现复制编码方案，减少绝热和/或噪声对绝热量子计算和量子退火的影响。 相同问题的多个实例被映射到量子位的相应子集和量子处理器的耦合器件。 在不同实例的量子位之间存在耦合的情况下，多个实例同时进化。 还描述了适于促进复制编码的量子处理器体系结构。

公开(公告)号：US20160071021A1

公开(公告)日：2016-03-10

申请号：US14844876

申请日：2015-09-03

Applicant: D-Wave Systems Inc.

Inventor： Jack Raymond

IPC: G06N99/00 ,  G06F15/76

CPC classification number: G06F15/76 ,  G06N99/002

Abstract: Techniques for improving the performance of a quantum processor are described. The techniques include reading out a fraction of the qubits in a quantum processor and utilizing one or more post-processing operations to reconstruct qubits of the quantum processor that are not read. The reconstructed qubits may be determined using a perfect sampler to provide results that are strictly better than reading all of the qubits directly from the quantum processor. The composite sample that includes read qubits and reconstructed qubits may be obtained faster than if all qubits of the quantum processor are read directly.

Abstract translation: 描述了用于改善量子处理器的性能的技术。 这些技术包括在量子处理器中读出一部分量子位，并且利用一个或多个后处理操作来重建量子处理器未被读取的量子位。 可以使用完美取样器来确定重构的量子位，以提供严格比直接从量子处理器读取所有量子位的结果。 如果量子处理器的所有量子位都被直接读取，则可以获得包括读量子位和重构量子位的复合样本。

公开(公告)号：US20160019468A1

公开(公告)日：2016-01-21

申请号：US14868019

申请日：2015-09-28

Applicant: D-Wave Systems Inc.

Inventor： Paul Bunyk ,  Felix Maibaum

IPC: G06N99/00 ,  H01L39/02 ,  H01L39/22 ,  G06F17/50

CPC classification number: G06N99/002 ,  B82Y10/00 ,  G01R1/06755 ,  G06F15/82 ,  G06F17/5009 ,  H01L39/025 ,  H01L39/223

Abstract: A system may include first and second qubits that cross one another and a first coupler having a perimeter that encompasses at least a part of the portions of the first and second qubits, the first coupler being operable to ferromagnetically or anti-ferromagnetically couple the first and the second qubits together. A multi-layered computer chip may include a first plurality N of qubits laid out in a first metal layer, a second plurality M of qubits laid out at least partially in a second metal layer that cross each of the qubits of the first plurality of qubits, and a first plurality N times M of coupling devices that at least partially encompasses an area where a respective pair of the qubits from the first and the second plurality of qubits cross each other.

公开(公告)号：US20160012346A1

公开(公告)日：2016-01-14

申请号：US14860087

申请日：2015-09-21

Applicant: D-Wave Systems Inc.

Inventor： Jacob Daniel Biamonte ,  Andrew J. Berkley ,  Mohammad H.S. Amin

IPC: G06N99/00

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

Abstract: Devices, methods and articles advantageously allow communications between qubits to provide an architecture for universal adiabatic quantum computation. The architecture includes a first coupled basis A1B1 and a second coupled basis A2B2 that does not commute with the first basis A1B1.

Abstract translation: 设备，方法和文章有利地允许量子位之间的通信提供用于通用绝热量子计算的架构。 该架构包括第一耦合基A1B1和不与第一基A1B1通信的第二耦合基A2B2。

公开(公告)号：US20150379418A1

公开(公告)日：2015-12-31

申请号：US14846334

申请日：2015-09-04

Applicant: D-Wave Systems Inc.

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

IPC: G06N99/00 ,  H01L27/18 ,  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.

Abstract translation: 装置和方法使得能够对量子处理器的超导元件中的不期望的差异进行主动补偿。 量子位可以包括主复合约瑟夫逊结（CJJ）结构，其可以包括至少第一次级CJJ结构，以能够补偿主CJJ结构中的约瑟夫逊结不对称性。 量子位可以包括与第一CJJ结构并联耦合以提供可调电容的串联LC电路。 量子位控制系统可以包括用于调整量子位环路的电感的装置，例如感应耦合到量子位循环并由编程接口控制的可调谐耦合器件，或与量子位循环串联耦合并由编程接口控制的CJJ结构 。

公开(公告)号：US20150346291A1

公开(公告)日：2015-12-03

申请号：US14462200

申请日：2014-08-18

Applicant: D-Wave Systems Inc.

Inventor： Trevor Michael Lanting ,  Paul I. Bunyk ,  Andrew J. Berkley ,  Richard G. Harris ,  Sergey V. Uchaykin ,  Andrew Brock Wilson ,  Mark Johnson

IPC: G01R33/035 ,  G01R33/00

CPC classification number: G01R33/0354 ,  G01R33/0017 ,  G01R33/0094

Abstract: SQUIDs may detect local magnetic fields. SQUIDS of varying sizes, and hence sensitivities may detect different magnitudes of magnetic fields. SQUIDs may be oriented to detect magnetic fields in a variety of orientations, for example along an orthogonal reference frame of a chip or wafer. The SQUIDS may be formed or carried on the same chip or wafer as a superconducting processor (e.g., a superconducting quantum processor). Measurement of magnetic fields may permit compensation, for example allowing tuning of a compensation field via a compensation coil and/or a heater to warm select portions of a system. A SQIF may be implemented as a SQUID employing an unconventional grating structure. Successful fabrication of an operable SQIF may be facilitated by incorporating multiple Josephson junctions in series in each arm of the unconventional grating structure.

Abstract translation: SQUID可以检测局部磁场。 具有不同尺寸的SQUIDS，因此灵敏度可以检测不同的磁场强度。 SQUID可以被定向以检测各种取向中的磁场，例如沿着芯片或晶片的正交参考系。 SQUIDS可以与超导处理器（例如超导量子处理器）形成或携带在相同的芯片或晶片上。 磁场的测量可以允许补偿，例如允许通过补偿线圈和/或加热器对补偿场进行调谐以温暖系统的选择部分。 SQIF可以被实现为采用非常规光栅结构的SQUID。 可以通过将多个约瑟夫逊结串联在非常规光栅结构的每个臂中来促进可操作的SQIF的成功制造。

公开(公告)号：US20150262073A1

公开(公告)日：2015-09-17

申请号：US14643180

申请日：2015-03-10

Applicant: D-Wave Systems Inc.

Inventor： Trevor Michael Lanting

IPC: G06N99/00 ,  G06F15/82

CPC classification number: G06F17/00 ,  G06F15/82 ,  G06N99/002

Abstract: Systems, devices, articles, methods, and techniques for advancing quantum computing by removing unwanted interactions in one or more quantum processor. One approach includes creating an updated plurality of programmable parameters based at least in part on a received value for the characteristic magnetic susceptibility of the qubit in the at least one quantum processor, and returning the updated plurality of programmable parameters. Examples programmable parameters include local biases, and coupling values characterizing the problem Hamilton. Also, for example, a quantum processor may be summarized as including a first loop of superconducting material, a first compound Josephson junction interrupting the first loop of superconducting material, a first coupler inductively coupled to the first loop of superconducting material, a second coupler inductively coupled to the first loop of superconducting material, and a second loop of superconducting material proximally placed to the first loop of superconducting material inductively coupled to the first coupler and the second coupler.

Abstract translation: 通过消除一个或多个量子处理器中的不需要的交互来推进量子计算的系统，设备，文章，方法和技术。 一种方法包括至少部分地基于所述至少一个量子处理器中的量子位的特征磁化率的接收值创建更新的多个可编程参数，以及返回更新的多个可编程参数。 示例可编程参数包括局部偏差和表征问题Hamilton的耦合值。 此外，例如，量子处理器可以总结为包括超导材料的第一环路，中断超导材料的第一环路的第一复合约瑟夫逊结，感应耦合到超导材料的第一环路的第一耦合器，感应地耦合到第二环路的第二耦合器 耦合到超导材料的第一回路，以及近端放置到感应耦合到第一耦合器和第二耦合器的超导材料的第一环路的第二回路的超导材料。

公开(公告)号：US09134047B2

公开(公告)日：2015-09-15

申请号：US13863218

申请日：2013-04-15

Applicant: D-Wave Systems Inc.

Inventor： Randall C. Black ,  Jeremy P. Hilton ,  Geordie Rose

IPC: F25B9/12 ,  F25B9/10 ,  G06F1/20 ,  H05K7/20 ,  H01L39/02

CPC classification number: F25B9/12 ,  F25B9/10 ,  G06F1/20 ,  G06F2200/201 ,  H01L39/02 ,  H05K7/20372

Abstract: Cryogenic refrigeration employs a pulse tube cryo-cooler and a dilution refrigerator to provide very low temperature cooling, for example, to cool superconducting processors. Continuous cryogenic cycle refrigeration may be achieved using multiple adsorption pumps. Various improvements may include multiple distinct thermal-linking points, evaporation pots with cooling structures, and/or one or more gas-gap heat switches which may be integral to an adsorption pump. A reservoir volume may provide pressure relief when the system is warmed above cryogenic temperature, reducing the mass of the system. Additional heat exchangers and/or separate paths for condensation and evaporation may be provided. Multi-channel connectors may be used, and/or connectors formed of a regenerative material with a high specific heat capacity at cryogenic temperature. Flexible PCBs may provide thermal links to components that embody temperature gradients. Various components may be pre-cooled, for example via a switchable thermalization system.

Abstract translation: 低温制冷采用脉冲管冷冻机和稀释冰箱来提供极低温度的冷却，例如冷却超导处理器。 可以使用多个吸附泵实现连续低温循环制冷。 各种改进可以包括多个不同的热连接点，具有冷却结构的蒸发罐，和/或可以与吸附泵成一体的一个或多个气隙热交换器。 当系统温度超过低温温度时，储存器容积可以提供压力释放，从而减小系统的质量。 可以提供用于冷凝和蒸发的附加热交换器和/或单独路径。 可以使用多通道连接器，和/或由在低温下具有高比热容的再生材料形成的连接器。 柔性PCB可以提供体现温度梯度的部件的热连接。 可以例如经由可切换热化系统预先冷却各种部件。