Analog processor comprising quantum devices

Patent metadata

Field	Value
Publication number	US-10346349-B2
Application number	US-201816173846-A
Country	US
Kind code	B2
Filing date	Oct 29, 2018
Priority date	Dec 23, 2004
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

Analog processors for solving various computational problems are provided. Such analog processors comprise a plurality of quantum devices, arranged in a lattice, together with a plurality of coupling devices. The analog processors further comprise bias control systems each configured to apply a local effective bias on a corresponding quantum device. A set of coupling devices in the plurality of coupling devices is configured to couple nearest-neighbor quantum devices in the lattice. Another set of coupling devices is configured to couple next-nearest neighbor quantum devices. The analog processors further comprise a plurality of coupling control systems each configured to tune the coupling value of a corresponding coupling device in the plurality of coupling devices to a coupling. Such quantum processors further comprise a set of readout devices each configured to measure the information from a corresponding quantum device in the plurality of quantum devices.

First claim

We claim:

1. An analog processor, comprising:
a plurality of quantum devices; and
a plurality of coupling devices, a first coupling device in the first plurality of coupling devices coupling a first quantum device and a second quantum device in the plurality of quantum devices, and a second coupling device in the plurality of coupling devices coupling the first quantum device and a third quantum device in the plurality of quantum devices, wherein the first coupling device in the plurality of coupling devices is one of an rf-SQUID and a dc-SQUID, and the second coupling device in the plurality of coupling devices is a direct galvanic coupling.

2. The analog processor of claim 1 , wherein the first quantum device and the third quantum device in the plurality of quantum devices are ferromagnetically coupled, and, in operation, have a same quantum state.

3. The analog processor of claim 1 , wherein the second coupling device includes:
a first section fabricated in a first metal layer of an integrated circuit; and
a second section fabricated in a second metal layer of the integrated circuit, the second section electrically coupled to the first section by a via.

4. The analog processor of claim 3 , wherein the plurality of quantum devices are arranged in a lattice, the first and the second quantum devices are nearest neighbors, and the first and the third quantum devices are more distant than next-nearest neighbors.

5. The analog processor of claim 1 , wherein the plurality of quantum devices are arranged in a lattice, the second quantum device is at a Manhattan distance of one from the first quantum device, and the third quantum device is at a Manhattan distance of greater than two from the first quantum device.

6. The analog processor of claim 1 , wherein the plurality of quantum devices are arranged in a lattice, the first and the second quantum devices are nearest neighbors, and the first and the third quantum devices are more distant than next-nearest neighbors.

7. The analog processor of claim 1 , wherein the plurality of quantum devices are arranged in a lattice, the second quantum device is at a Manhattan distance of one from the first quantum device, and the third quantum device is at a Manhattan distance of greater than two from the first quantum device.

Assignees

• D Wave Systems Inc

Inventors

• Maassen Van Den Brink Alexander
• Love Peter
• Amin Mohammad H S
• Rose Geordie
• Grant David
• Steininger Miles F H
• Bunyk Paul I
• Berkley Andrew J

Classifications

• G06F15/80 Primary

  comprising an array of processing units with common control, e.g. single instruction multiple data processors (G06F15/82 takes precedence {; for correlation function computation G06F17/15}) · CPC title

• H03K3/38

  by the use, as active elements, of superconductive devices · CPC title

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• B82Y10/00

  Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic · CPC title

• G06F15/76

  Architectures of general purpose stored program computers (with program plugboard G06F15/08; multicomputers G06F15/16) · CPC title