Cryogenic Magnetless Circulator for Hybrid Classical-Qubit Readout
Summary
USPTO published patent application US20260111779A1 for a cryogenic magnet-less circulator device designed for integration with quantum computers to facilitate qubit measurements. The invention uses spatiotemporal modulation of angular momentum for microwave photons controlled via a modulated control signal. The circulator topology employs tank circuits arranged in a star topology with different sets of radio frequency superconducting quantum interference devices (rf-SQUIDs) per tank circuit, which resonate out-of-phase based on the modulated control signal. The application was filed on October 17, 2024, with inventors Navjot Kaur Khaira and Tejinder Singh.
“The technology described herein is directed towards a cryogenic magnet-less circulator device, in which the circulator device is based on the spatiotemporal modulation of angular momentum for microwave photons, controlled using a modulated control signal.”
About this source
USPTO classification G06N covers computer systems based on specific computational models: neural networks, knowledge representation, fuzzy logic, expert systems, evolutionary algorithms. With the AI patent boom, this is one of the most-filed application classes in the office. Every newly published application in G06N lands in this feed, around 230 a month. Patent applications publish 18 months after filing, so this feed reveals what AI labs and companies were working on in the prior year and a half. Watch this if you compete in machine learning, file freedom-to-operate analyses, scout acquisition targets in AI infrastructure, or track which research groups are converting publications to patents. GovPing pulls each application with the filing number, title, applicant, and abstract.
What changed
USPTO published patent application US20260111779A1 for a cryogenic magnet-less circulator designed for hybrid classical-qubit readout in quantum computing systems. The invention employs spatiotemporal modulation of angular momentum for microwave photons controlled through a modulated signal, with tank circuits in a star topology using rf-SQUIDs that resonate out-of-phase. The device can be fabricated using standard semiconductor processes and integrated on superconducting chips alongside qubits. The primary implication for affected parties in the quantum computing and semiconductor manufacturing sectors is that this patent, if granted, would establish IP rights over a specific circulator architecture for quantum measurement applications.
Archived snapshot
Apr 23, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
MAGNET-LESS CIRCULATOR FOR HYBRID-CLASSICAL QUBIT READ-OUT SYSTEMS WITH BUILT-IN PHASE MODULATION
Application US20260111779A1 Kind: A1 Apr 23, 2026
Inventors
Navjot Kaur Khaira, Tejinder Singh
Abstract
The technology described herein is directed towards a cryogenic magnet-less circulator device, in which the circulator device is based on the spatiotemporal modulation of angular momentum for microwave photons, controlled using a modulated control signal. The circulator device is configured for integration with a quantum computer, e.g., to facilitate qubit measurements. The circulator topology and design are based on tank circuits, e.g., arranged in a star topology with different sets of radio frequency superconducting quantum interference devices (rf-SQUIDS) per tank circuit, that resonate out-of-phase based on the modulated control signal. A single control line can be used to operate the circulator. The circulator can be fabricated using standard semiconductor processes, allowing one or more circulators to be integrated on the same superconducting chip as the qubits. A classical computer can be used to output the modulated control signal, and adapt the modulated control signal as needed under varying conditions.
CPC Classifications
G06N 10/40 H01P 1/383 H03K 17/92 H10N 69/00
Filing Date
2024-10-17
Application No.
18919198
Mentioned entities
Parties
Related changes
Get daily alerts for USPTO Patent Applications - AI & Computing (G06N)
Daily digest delivered to your inbox.
Free. Unsubscribe anytime.
Source
About this page
Every important government, regulator, and court update from around the world. One place. Real-time. Free. Our mission
Source document text, dates, docket IDs, and authority are extracted directly from USPTO.
The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.
Classification
Who this affects
Taxonomy
Browse Categories
Get alerts for this source
We'll email you when USPTO Patent Applications - AI & Computing (G06N) publishes new changes.
Subscribed!
Optional. Filters your digest to exactly the updates that matter to you.