/Patent Tracker
GooglePatent applicationChips & hardwareInterest 4/10

Google patents quantum signal splitter to manage heat in chips

Google describes a quantum computing setup that splits a control signal before it reaches the quantum device. One part of the signal goes to the device, while the other is sent away to reduce heat buildup inside the cold chamber.

Why it mattersKeeping quantum computers cold is a major engineering challenge, so methods to remove excess heat could help make these systems more stable.

In the filing’s own words

This disclosure is directed to a quantum computing system (QCS) that includes a cryogenic sub-system, a signal-generating element, a first signal-splitting element, a first transmission path, a second transmission path, a third transmission path, and a quantum device. A first environment is located outside the cryogenic sub-system and a second environment is associated with the cryogenic sub-system. The signal-generating element generates a first signal. The first signal-splitting element is positioned within the second environment. The quantum device is positioned within the cryogenic sub-system. The first transmission path transmits the first signal from the signal-generating element to the first signal-splitting element. The first signal-splitting element subdivides the first signal into a second signal and a third signal. The third transmission transmits the third signal from the first signal-splitting element to the first environment. The second transmission path transmits the second signal from the first signal-splitting element to the quantum device.

What exactly they claim (claim 1)

1.- 20. (canceled)

Facts

Company
Google (Google LLC)
Official title
Thermalization and Attenuation of Signals within Quantum Computing Systems via Directional Couplers
Publication number
US20260289369A1
Application number
19048588
Filed
Feb 7, 2025
Published
Sep 24, 2026
Inventors
2
Claims
21

Classified under

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

More from Google in Chips & hardware

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.