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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12333382 B1

PDFFull Text
Date of Patent:
Jun. 17, 2025

Filed:

Feb. 17, 2023

Quantum circuit optimization using windowed quantum arithmetic

Applicant:

Google Llc, Mountain View, CA (US);

Inventor:

Craig Gidney, Goleta, CA (US);

Assignee:

Google LLC, Mountain View, CA (US);

Attorney:

Fish & Richardson P.C.

Primary Examiner:

Jack Chiang

Assistant Examiner:

Suchin Parihar

Int. Cl.
CPC ...
G06N 10/20 (2022.01); G06F 7/48 (2006.01); G06F 7/505 (2006.01); G06F 7/72 (2006.01); G06F 17/10 (2006.01); G06N 10/00 (2022.01); G06N 10/70 (2022.01); G11C 11/4063 (2006.01); H04B 10/70 (2013.01);
U.S. Cl.
CPC ...
G06N 10/20 (2022.01); G06F 7/4824 (2013.01); G06F 7/505 (2013.01); G06F 7/5057 (2013.01); G06F 7/72 (2013.01); G06F 17/10 (2013.01); G06N 10/00 (2019.01); G06N 10/70 (2022.01); G11C 11/4063 (2013.01); H04B 10/70 (2013.01);
Abstract

Methods, systems and apparatus for performing windowed quantum arithmetic. In one aspect, a method for performing a product addition operation includes: determining multiple entries of a lookup table, comprising, for each index in a first set of indices, multiplying the index value by a scalar for the product addition operation; for each index in a second set of indices, determining multiple address values, comprising extracting source register values corresponding to indices between i) the index in the second set of indices, and ii) the index in the second set of indices plus the predetermined window size; and adjusting values of a target quantum register based on the determined multiple entries of the lookup table and the determined multiple address values.

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Gidney, Craig. (2025). Quantum circuit optimization using windowed quantum arithmetic (U.S. Patent No. 12333382). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12333382

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