公开(公告)号：US08536566B2

公开(公告)日：2013-09-17

申请号：US12991891

申请日：2009-09-03

申请人： Jan Johansson ,  Andrew J. Berkley ,  Mohammad Amin

发明人： Jan Johansson ,  Andrew J. Berkley ,  Mohammad Amin

IPC分类号： H01L39/22

CPC分类号： H01L39/223 ,  B82Y10/00 ,  G06N99/002 ,  H01L27/18

摘要： Apparatus and methods enable active compensation for unwanted discrepancies in the superconducting elements of 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.

摘要翻译： 装置和方法能够对量子处理器的超导元件中的有害偏差进行有效补偿。 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：US20110057169A1

公开(公告)日：2011-03-10

申请号：US12991891

申请日：2009-09-03

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

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

IPC分类号： H01L39/22 ,  B82Y10/00

CPC分类号： H01L39/223 ,  B82Y10/00 ,  G06N99/002 ,  H01L27/18

摘要： Apparatus and methods enable active compensation for unwanted discrepancies in the superconducting elements of 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.

摘要翻译： 装置和方法能够对量子处理器的超导元件中的有害偏差进行有效补偿。 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：US20110060780A1

公开(公告)日：2011-03-10

申请号：US12991888

申请日：2009-05-19

申请人： Andrew J. Berkley ,  Richard G. Harris ,  Mohammad Amin

发明人： Andrew J. Berkley ,  Richard G. Harris ,  Mohammad Amin

IPC分类号： G06F17/11 ,  G06F7/44 ,  G06F9/00

CPC分类号： B82Y10/00 ,  G06N99/002 ,  Y10S505/846

摘要： Quantum annealing may include applying and gradually removing disorder terms to qubits of a quantum processor, for example superconducting flux qubits of a superconducting quantum processor. A problem Hamiltonian may be established by applying control signals to the qubits, an evolution Hamiltonian established by applying disorder terms, and annealing by gradually removing the disorder terms. Change in persistent current in the qubits may be compensated. Multipliers may mediate coupling between various qubits and a global signal line, for example by applying respective scaling factors. Two global signal lines may be arranged in an interdigitated pattern to couple to respective qubits of a communicatively coupled pair of qubits. Pairs of qubits may be communicatively isolated and used to measure a response of one another to defined signals.

摘要翻译： 量子退火可以包括应用并逐渐去除量子处理器的量子位的无序项，例如超导量子处理器的超导通量量子位。 可以通过对量子位应用控制信号来建立哈密尔顿算子，通过应用无序项建立的演化哈密尔顿算子，并逐渐消除无序项进行退火。 量子位中持续电流的变化可能会得到补偿。 乘法器可以介导各种量子位与全局信号线之间的耦合，例如通过应用各自的缩放因子。 两个全局信号线可以以交叉形式布置以耦合到通信耦合的一对量子位的相应量子位。 量子位对可以通信隔离并用于测量彼此对定义的信号的响应。

公开(公告)号：US20090299947A1

公开(公告)日：2009-12-03

申请号：US12473970

申请日：2009-05-28

申请人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

发明人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

IPC分类号： G06N7/02 ,  G06N3/12

CPC分类号： G06N99/002 ,  B82Y10/00

摘要： Various adaptations to adiabatic quantum computation and quantum annealing are described. These adaptations generally involve tailoring an initial Hamiltonian so that a local minimum is avoided when a quantum processor is evolved from the initial Hamiltonian to a problem Hamiltonian. The initial Hamiltonian may represent a mixed Hamiltonian that includes both diagonal and off-diagonal terms, where the diagonal terms at least partially define a center point of a first computation space that is at least partially contained within a second computation space. A problem Hamiltonian may be evolved into a low energy state by inhomogeneously inducing disorder in the qubits of the quantum processor. A higher degree of disorder may be induced in a subset of qubits predicted to contribute to a local minimum of the problem Hamiltonian.

摘要翻译： 描述了绝热量子计算和量子退火的各种适应。 这些调整通常涉及定制初始哈密尔顿算子，以便当量子处理器从初始哈密尔顿算子演化为问题哈密尔顿算子时避免局部最小值。 初始哈密尔顿算子可以表示包括对角线和非对角线项的混合哈密尔顿算子，其中对角项至少部分地限定第一计算空间的中心点，其至少部分地包含在第二计算空间内。 哈密​​尔顿算子可能通过在量子处理器的量子位中不均匀地引起异常而演变为低能态。 可能在被预测为有助于局部最小问题的哈密顿量的量子位的子集中诱发更高程度的紊乱。

公开(公告)号：US08229863B2

公开(公告)日：2012-07-24

申请号：US12473970

申请日：2009-05-28

申请人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

发明人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

IPC分类号： G06E1/00

CPC分类号： G06N99/002 ,  B82Y10/00

摘要： Various adaptations to adiabatic quantum computation and quantum annealing are described. These adaptations generally involve tailoring an initial Hamiltonian so that a local minimum is avoided when a quantum processor is evolved from the initial Hamiltonian to a problem Hamiltonian. The initial Hamiltonian may represent a mixed Hamiltonian that includes both diagonal and off-diagonal terms, where the diagonal terms at least partially define a center point of a first computation space that is at least partially contained within a second computation space. A problem Hamiltonian may be evolved into a low energy state by inhomogeneously inducing disorder in the qubits of the quantum processor. A higher degree of disorder may be induced in a subset of qubits predicted to contribute to a local minimum of the problem Hamiltonian.

摘要翻译： 描述了绝热量子计算和量子退火的各种适应。 这些调整通常涉及定制初始哈密尔顿算子，以便当量子处理器从初始哈密尔顿算子演化为问题哈密尔顿算子时避免局部最小值。 初始哈密尔顿算子可以表示包括对角线和非对角线项的混合哈密尔顿算子，其中对角项至少部分地限定第一计算空间的中心点，其至少部分地包含在第二计算空间内。 哈密​​尔顿算子可能通过在量子处理器的量子位中不均匀地引起异常而演变为低能态。 可能在被预测为有助于局部最小问题的哈密顿量的量子位的子集中诱发更高程度的紊乱。

公开(公告)号：US09015215B2

公开(公告)日：2015-04-21

申请号：US12991888

申请日：2009-05-19

申请人： Andrew J. Berkley ,  Richard G. Harris ,  Mohammad Amin

发明人： Andrew J. Berkley ,  Richard G. Harris ,  Mohammad Amin

IPC分类号： G06F15/00 ,  B82Y10/00 ,  G06N99/00

CPC分类号： B82Y10/00 ,  G06N99/002 ,  Y10S505/846

摘要： Quantum annealing may include applying and gradually removing disorder terms to qubits of a quantum processor, for example superconducting flux qubits of a superconducting quantum processor. A problem Hamiltonian may be established by applying control signals to the qubits, an evolution Hamiltonian established by applying disorder terms, and annealing by gradually removing the disorder terms. Change in persistent current in the qubits may be compensated. Multipliers may mediate coupling between various qubits and a global signal line, for example by applying respective scaling factors. Two global signal lines may be arranged in an interdigitated pattern to couple to respective qubits of a communicatively coupled pair of qubits. Pairs of qubits may be communicatively isolated and used to measure a response of one another to defined signals.

摘要翻译： 量子退火可以包括应用并逐渐去除量子处理器的量子位的无序项，例如超导量子处理器的超导通量量子位。 可以通过对量子位应用控制信号来建立哈密尔顿算子，通过应用无序项建立的演化哈密尔顿算子，并逐渐消除无序项进行退火。 量子位中持续电流的变化可能会得到补偿。 乘法器可以介导各种量子位与全局信号线之间的耦合，例如通过应用各自的缩放因子。 两个全局信号线可以以交叉形式布置以耦合到通信耦合的一对量子位的相应量子位。 量子位对可以通信隔离并用于测量彼此对定义的信号的响应。

公开(公告)号：US08560470B2

公开(公告)日：2013-10-15

申请号：US13529664

申请日：2012-06-21

申请人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

发明人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

IPC分类号： G06F15/18

CPC分类号： G06N99/002 ,  B82Y10/00

摘要： Various adaptations to adiabatic quantum computation and quantum annealing are described. These adaptations generally involve tailoring an initial Hamiltonian so that a local minimum is avoided when a quantum processor is evolved from the initial Hamiltonian to a problem Hamiltonian. The initial Hamiltonian may represent a mixed Hamiltonian that includes both diagonal and off-diagonal terms, where the diagonal terms at least partially define a center point of a first computation space that is at least partially contained within a second computation space. A problem Hamiltonian may be evolved into a low energy state by inhomogeneously inducing disorder in the qubits of the quantum processor. A higher degree of disorder may be induced in a subset of qubits predicted to contribute to a local minimum of the problem Hamiltonian.

摘要翻译： 描述了绝热量子计算和量子退火的各种适应。 这些调整通常涉及定制初始哈密尔顿算子，以便当量子处理器从初始哈密尔顿算子演化为问题哈密尔顿算子时避免局部最小值。 初始哈密尔顿算子可以表示包括对角线和非对角线项的混合哈密尔顿算子，其中对角项至少部分地限定第一计算空间的中心点，其至少部分地包含在第二计算空间内。 哈密​​尔顿算子可能通过在量子处理器的量子位中不均匀地引起异常而演变为低能态。 可能在被预测为有助于局部最小问题的哈密顿量的量子位的子集中诱发更高程度的紊乱。

公开(公告)号：US20120265718A1

公开(公告)日：2012-10-18

申请号：US13529664

申请日：2012-06-21

申请人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

发明人： Mohammad Amin ,  Vicky Choi ,  Andrew J. Berkley

IPC分类号： G06F15/18

CPC分类号： G06N99/002 ,  B82Y10/00

摘要： Various adaptations to adiabatic quantum computation and quantum annealing are described. These adaptations generally involve tailoring an initial Hamiltonian so that a local minimum is avoided when a quantum processor is evolved from the initial Hamiltonian to a problem Hamiltonian. The initial Hamiltonian may represent a mixed Hamiltonian that includes both diagonal and off-diagonal terms, where the diagonal terms at least partially define a center point of a first computation space that is at least partially contained within a second computation space. A problem Hamiltonian may be evolved into a low energy state by inhomogeneously inducing disorder in the qubits of the quantum processor. A higher degree of disorder may be induced in a subset of qubits predicted to contribute to a local minimum of the problem Hamiltonian.

摘要翻译： 描述了绝热量子计算和量子退火的各种适应。 这些调整通常涉及定制初始哈密尔顿算子，以便当量子处理器从初始哈密尔顿算子演化为问题哈密尔顿算子时避免局部最小值。 初始哈密尔顿算子可以表示包括对角线和非对角线项的混合哈密尔顿算子，其中对角项至少部分地限定第一计算空间的中心点，其至少部分地包含在第二计算空间内。 哈密​​尔顿算子可能通过在量子处理器的量子位中不均匀地引起异常而演变为低能态。 可能在被预测为有助于局部最小问题的哈密顿量的量子位的子集中诱发更高程度的紊乱。

公开(公告)号：US08234103B2

公开(公告)日：2012-07-31

申请号：US12098348

申请日：2008-04-04

申请人： Jacob Daniel Biamonte ,  Andrew Joseph Berkley ,  Mohammad Amin

发明人： Jacob Daniel Biamonte ,  Andrew Joseph Berkley ,  Mohammad Amin

IPC分类号： B82Y10/00

CPC分类号： G06N99/002 ,  B82Y10/00 ,  G06N99/00 ,  Y10S977/933

摘要： 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.

摘要翻译： 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：US20050256007A1

公开(公告)日：2005-11-17

申请号：US11092953

申请日：2005-03-28

申请人： Mohammad Amin ,  Miroslav Grajcar ,  Andrei Izmalkov ,  Evgeni Il'ichev ,  Miles Steininger

发明人： Mohammad Amin ,  Miroslav Grajcar ,  Andrei Izmalkov ,  Evgeni Il'ichev ,  Miles Steininger

IPC分类号： G06N99/00 ,  H01G2/00 ,  H01L29/06 ,  H01L39/22 ,  H03K19/195

CPC分类号： G06N99/002 ,  B82Y10/00

摘要： A method for quantum computing using a quantum system comprising a plurality of qubits is provided. The system can be in any one of at least two configurations at any given time including one characterized by an initialization Hamiltonian HO and one characterized by a problem Hamiltonian HP. The problem Hamiltonian HP has a ground state. Each respective first qubit in the qubits is arranged with respect to a respective second qubit in the qubits such that they define a predetermined coupling strength. The predetermined coupling strengths between the qubits in the plurality of qubits collectively define a computational problem to be solved. In the method, the system is initialized to HO and is then adiabatically changed until the system is described by the ground state of the problem Hamiltonian HP. Then the state of the system is read out by probing an observable of the σX Pauli matrix operator.

摘要翻译： 提供了使用包括多个量子位的量子系统的量子计算的方法。 该系统可以在任何给定时间处于至少两个配置中的任何一个中，其中一个特征在于初始化哈密尔顿算子H＆lt;＆gt;和以问题哈密顿H（H）为特征的特征。 问题哈密顿H＆lt; P＆gt;具有基态。 量子位中的每个相应的第一量子位相对于量子位中的相应的第二量子位被布置，使得它们限定预定的耦合强度。 多个量子位中的量子位之间的预定耦合强度共同定义了待解决的计算问题。 在该方法中，系统被初始化为H O O，并且然后被绝热地改变，直到系统被问题的基本状态描述为哈密尔顿H P。 然后通过探测一个可见的西格玛（Paul）矩阵运算符来读出该系统的状态。