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：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。

公开(公告)号：US20030098455A1

公开(公告)日：2003-05-29

申请号：US09823895

申请日：2001-03-31

Applicant: D-Wave Systems, Inc.

Inventor： Mohammad H.S. Amin ,  Timothy Duty ,  Alexander Omelyanchouk ,  Geordie Rose ,  Alexandre Zagoskin ,  Jeremy P. Hilton

IPC: H01L029/06

CPC classification number: G01R33/0354 ,  H01L39/225 ,  H01L39/2496 ,  Y10S505/874 ,  Y10S977/933

Abstract: A solid state dc-SQUID includes a superconducting loop containing a plurality of Josephson junctions, wherein an intrinsic phase shift is accumulated through the loop. In an embodiment of the invention, the current-phase response of the dc-SQUID sits in a linear regime where directional sensitivity to flux through the loop occurs. Changes in the flux passing through the superconducting loop stimulates current which can be quantified, thus providing a means of measuring the magnetic field. Given the linear and directional response regime of the embodied device, an inherent current to phase sensitivity is achieved that would otherwise be unobtainable in common dc-SQUID devices without extrinsic intervention.

Abstract translation: 固态dc-SQUID包括包含多个约瑟夫逊结的超导回路，其中本征相移通过回路积累。 在本发明的一个实施例中，dc-SQUID的电流相位响应处于线性状态，其中发生通过环路的通量的方向灵敏度。 通过超导环路的通量的变化会刺激可量化的电流，从而提供测量磁场的方法。 给定所体现的装置的线性和方向响应方案，实现固有的电流到相位灵敏度，否则在相同的dc-SQUID装置中将无法获得，而不需要外部干预。