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Google patents method to load classical data into quantum computers

Google describes a technique for feeding standard digital data into a quantum computer by breaking the data into smaller parity checks. The system uses specific quantum memory operations to process these checks and store the results in separate output registers.

Why it mattersThis filing outlines a specific engineering approach for improving how quantum processors handle standard information, which is a foundational step for building useful quantum applications.

In the filing’s own words

Examples of the present disclosure are directed to a method for operating a quantum computing system (QCS) to load classical data. The method includes configuring a quantum circuit to implement a target classical function that is defined over a string of input bits. The target classical function is decomposed into a set of parity sub-functions. A set of quantum registers of the QCS is initialized with a superposition of input states corresponding to the string of input bits. A sequence of Quantum Read-Only Memory (QROM) operations is executed on the set of quantum registers to generate a set of outputs. Each QROM operation of the sequence of QROM operations encodes a separate parity sub-function of the set of parity sub-functions. Each output of the set of outputs is routed to a separate output register of a set of output registers of the QCS.

What exactly they claim (claim 1)

1. A method for operating a quantum computing system (QCS) to load classical data, the method comprising: configuring a quantum circuit to implement a target classical function that is defined over a string of input bits, wherein the target classical function is decomposed into a set of parity sub-functions; initializing a set of quantum registers of the QCS with a superposition of input states corresponding to the string of input bits; executing, via the quantum circuit, a sequence of Quantum Read-Only Memory (QROM) operations on the set of quantum registers to generate a set of outputs, wherein each QROM operation of the sequence of QROM operations encodes a separate parity sub-function of the set of parity sub-functions; and routing each output of the set of outputs to a separate output register of a set of output registers of the QCS.

Facts

Company
Google (Google LLC)
Official title
Quantum Mass Production for Classical Data Loading
Publication number
US20260260144A1
Application number
19552347
Filed
Feb 27, 2026
Published
Sep 3, 2026
Inventors
3
Claims
21

Classified under

G06N 10/20 Physics & computingG06N 10/40 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.