Patent · US Active

Systems, methods and apparatus for superconducting demultiplexer circuits

US8611974B2 · kind B2 · utility

39Cited by

5References

40Claims

0Family size

Assignee

D-WAVE SYSTEMS INC. · CA

Inventors

Felix Maibaum · Braunschweig, DE
Paul I. Bunyk · Weallup Lake, US
Thomas Mahon · Guelph, CA

Key dates

Filing date	Jun 2, 2009
Grant date	Dec 17, 2013
Priority date	—
Expiry date	Feb 13, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/92
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A switching cell for a demultiplexer circuit includes a superconducting input signal path, at least two superconducting output signal paths, and transformers located between an intersection node and respective ends of the output signal paths. Flux applied via the transformers can influence which direction a signal propagates. The switching cell may also include power input nodes. Switching cells may be arranged in various configurations, for example a binary tree or H-tree. A superconducting inductor ladder circuit can perform a digital-to-analog conversion. Flux storage structures may be used with individual switching cells. Latching qubits may be employed. Buffer rows of switching cells may be used to reduce or eliminate cascade error.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.