公开(公告)号：US20040173793A1

公开(公告)日：2004-09-09

申请号：US10801336

申请日：2004-03-15

Applicant: D-Wave Systems, Inc.

Inventor： Alexandre Blais ,  Jeremy 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.

Abstract translation: 包括超导量子位的电路和以谐振频率为特征的谐振控制系统。 控制系统的谐振频率是偏置电流的函数。 电路还包括具有电容或电感的超导机构。 超导机制将超导量子位相互耦合到谐振控制系统。 用于与第二量子位的量子态纠缠第一量子位的量子态的方法。 在该方法中，将电容耦合到第一和第二量子位的谐振控制系统调谐到对应于第一量子位的最低两个势能级之间的能量差的第一频率。 然后将谐振控制系统调整到对应于第二量子位的最低两个势能级之间的能量差的第二频率。

公开(公告)号：US20030111661A1

公开(公告)日：2003-06-19

申请号：US10025848

申请日：2001-12-17

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。 该机制可以包括使超导回路的引线上的偏置电流通过，以及用于测量超导环路的引线上的电位变化的机构。 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：US20040173787A1

公开(公告)日：2004-09-09

申请号：US10801340

申请日：2004-03-15

Applicant: D-Wave Systems, Inc.

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

IPC: H01L039/22

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：US20040170047A1

公开(公告)日：2004-09-02

申请号：US10791617

申请日：2004-03-02

Applicant: D-Wave Systems, Inc.

Inventor： Mohammad H.S. Amin ,  Geordie Rose ,  Alexandre Zagoskin ,  Jeremy P. Hilton

IPC: G11C011/22

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

Abstract: A control system for an array of qubits is disclosed. The control system according to the present invention provides currents and voltages to qubits in the array of qubits in order to perform functions on the qubit. The functions that the control system can perform include read out, initialization, and entanglement. The state of a qubit can be determined by grounding the qubit, applying a current across the qubit, measuring the resulting potential drop across the qubit, and interpreting the potential drop as a state of the qubit. A qubit can be initialized by grounding the qubit and applying a current across the qubit in a selected direction for a time sufficient that the quantum state of the qubit can relax into the selected state. In some embodiments, the qubit can be initialized by grounding the qubit and applying a current across the qubit in a selected direction and then ramping the current to zero in order that the state of the qubit relaxes into the selected state. The states of two qubits can be entangled by coupling the two qubits through a switch. In some embodiments, the switch that is capable of grounding the qubits can also be utilized for entangling selected qubits.

Abstract translation: 公开了一种用于量子位阵列的控制系统。 根据本发明的控制系统为了在量子位上执行功能向量子位阵列中的量子位提供电流和电压。 控制系统可以执行的功能包括读出，初始化和纠缠。 量子位的状态可以通过对量子位进行接地，在量子位上施加电流，测量量子位上产生的电位降，并将潜在的下降解释为量子位的状态来确定。 可以通过将量子位接地并在选定方向上跨越量子位的电流施加一个量子位，以使量子位的量子态可以放松到所选择的状态。 在一些实施例中，可以通过将量子位接地并在所选方向上跨越量子位施加电流，然后将电流斜坡化为零，以使量子位的状态放松到所选择的状态来初始化量子位。 两个量子位的状态可以通过一个开关耦合两个量子位来纠缠。 在一些实施例中，能够使量子位接地的开关也可用于纠缠所选择的量子位。

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：US20030169041A1

公开(公告)日：2003-09-11

申请号：US10326017

申请日：2002-12-18

Applicant: D-Wave Systems, Inc.

Inventor： Michael D. Coury ,  Geordie Rose ,  Jeremy P. Hilton

IPC: G01V003/00

CPC classification number: B82Y10/00 ,  G06N10/00

Abstract: A computer program product for use in conjunction with a computer system, the computer program product comprising a computer readable storage medium and a computer program mechanism embedded therein. The computer program mechanism comprises a quantum computing integrated development environment (QC-IDE) module and a compiler module. The QC-IDE module is used to design a quantum logic for a plurality of qubits. The QC-IDE module includes instructions for generating a time resolved set of operators. The compiler module includes instructions for compiling the time resolved set of operators into a set of quantum machine language instructions.

Abstract translation: 一种与计算机系统一起使用的计算机程序产品，该计算机程序产品包括计算机可读存储介质和嵌入其中的计算机程序机制。 计算机程序机构包括量子计算集成开发环境（QC-IDE）模块和编译器模块。 QC-IDE模块用于设计多个量子位的量子逻辑。 QC-IDE模块包括用于生成时间分辨率的操作符集的指令。 编译器模块包括用于将时间分辨的运算符集合编译成一组量子机语言指令的指令。

公开(公告)号：US20030146429A1

公开(公告)日：2003-08-07

申请号：US10351631

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，以及用于测量超导环路的引线上的电位变化的机构。 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：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。

公开(公告)号：US20040167036A1

公开(公告)日：2004-08-26

申请号：US10791579

申请日：2004-03-02

Applicant: D-Wave Systems, Inc.

Inventor： Mohammad H.S. Amin ,  Geordie Rose ,  Alexandre Zagoskin ,  Jeremy P. Hilton

IPC: H01G002/00

CPC classification number: B82Y10/00 ,  G06N10/00 ,  Y10S977/933

Abstract: A control system for an array of qubits is disclosed. The control system according to the present invention provides currents and voltages to qubits in the array of qubits in order to perform functions on the qubit. The functions that the control system can perform include read out, initialization, and entanglement. The state of a qubit can be determined by grounding the qubit, applying a current across the qubit, measuring the resulting potential drop across the qubit, and interpreting the potential drop as a state of the qubit. A qubit can be initialized by grounding the qubit and applying a current across the qubit in a selected direction for a time sufficient that the quantum state of the qubit can relax into the selected state. In some embodiments, the qubit can be initialized by grounding the qubit and applying a current across the qubit in a selected direction and then ramping the current to zero in order that the state of the qubit relaxes into the selected state. The states of two qubits can be entangled by coupling the two qubits through a switch. In some embodiments, the switch that is capable of grounding the qubits can also be utilized for entangling selected qubits.

Abstract translation: 公开了一种用于量子位阵列的控制系统。 根据本发明的控制系统为了在量子位上执行功能向量子位阵列中的量子位提供电流和电压。 控制系统可以执行的功能包括读出，初始化和纠缠。 量子位的状态可以通过对量子位进行接地，在量子位上施加电流，测量量子位上产生的电位降，并将潜在的下降解释为量子位的状态来确定。 可以通过将量子位接地并在选定方向上跨越量子位的电流施加一个量子位，以使量子位的量子态可以放松到所选择的状态。 在一些实施例中，可以通过将量子位接地并在所选方向上跨越量子位施加电流，然后将电流斜坡化为零，以使量子位的状态放松到所选择的状态来初始化量子位。 两个量子位的状态可以通过一个开关耦合两个量子位来纠缠。 在一些实施例中，能够使量子位接地的开关也可用于纠缠所选择的量子位。