Quantinuum Patent US12689365: Silencing the Quantum Glitch
💡 Quantinuum just secured US 12,689,365 B2, a semiconductor switch patent granted July 21, 2026, that suppresses high-voltage glitches in the electrode control circuits of trapped-ion quantum computers. The invention, covering 20 claims, sits quietly at the boundary between classical electronics and the quantum processor itself - exactly the layer that determines whether these machines can ever scale reliably.
What US 12,689,365 Actually Claims
The patent, officially titled "High-voltage glitch-suppressed semiconductor switch for quantum object confinement apparatus," was granted to Quantinuum, LLC of Broomfield, Colorado on July 21, 2026. Its priority date traces back to a provisional application filed September 28, 2023, with the full utility application submitted on August 28, 2024 - a fast 23-month path from priority to grant. The four inventors, David Deen, Leonardo Ascarrunz, Paul M. Werking, and Garrett Shaffer, are all based in Quantinuum's U.S. facilities in Colorado and North Carolina.
Across 20 claims, the patent covers a transmission gate: two transistors wired in series, controlled by a gate driver that actively monitors voltage at both the input and output terminals. When the circuit detects a transient voltage spike, the "glitch," it suppresses it before that spike can travel to the trap electrodes that confine the ions. The CPC classification codes H03K 17/162 (electronic switching circuits) and G06N 10/40 (quantum computing applications) confirm exactly where the invention sits: in the control electronics layer, not in the trap or qubit design itself. Below is the patent's key data at a glance - the kind of cross-jurisdiction fact sheet that makes patent translation both necessary and technically demanding.
| Field | Detail |
|---|---|
| Patent number | US 12,689,365 B2 |
| Title | High-voltage glitch-suppressed semiconductor switch for quantum object confinement apparatus |
| Assignee | Quantinuum, LLC (Broomfield, CO, USA) |
| Inventors | David Deen; Leonardo Ascarrunz; Paul M. Werking; Garrett Shaffer |
| Priority date | September 28, 2023 (provisional US 63/586,214) |
| Filed | August 28, 2024 (App. No. 18/817,955) |
| Granted | July 21, 2026 |
| Jurisdiction | United States |
| Claims | 20 claims |
| Classification | H03K 17/162; G06N 10/40 |
The Problem: Why Voltage Glitches Kill Quantum States
To understand what this invention solves, it helps to picture what a trapped-ion quantum computer actually is. Unlike IBM's or Google's superconducting chips, which etch qubits into silicon and cool them to near absolute zero, a trapped-ion machine suspends individual charged atoms - typically ytterbium or barium ions - in mid-air using precisely shaped electromagnetic fields. The trap electrodes must hold specific voltages, switching rapidly as the computation proceeds. A voltage glitch - even a microsecond-long transient spike during a switch transition - can heat or displace the suspended ion, collapsing the quantum state. The qubit is simply gone.
This is not a hypothetical concern. As traps scale up - Quantinuum's H2-1 machine already runs 56 qubits simultaneously - the number of electrodes multiplies, and so does the statistical probability that at least one will glitch during a computation. Each additional qubit is also an additional failure point. The transmission-gate switch in US 12,689,365 addresses this at the hardware layer, before any glitch can reach the trap. That is a more elegant solution than trying to correct for glitch-induced errors in software after the fact - and it sets up the next question of what this technology could unlock.
What This Technology Depends On - and What It Could Enable
Trapped-ion quantum computing sits at the intersection of vacuum physics, laser optics, analog electronics, and increasingly specialized semiconductor design. The switch in US 12,689,365 is the bridge between the digital command layer (classical computers sending instructions) and the quantum layer (the ion trap itself). Without reliable, glitch-free switching at every electrode, each additional qubit adds noise and uncertainty to the system, compounding exponentially as the machine grows.
If this control switch proves robust across larger electrode arrays, it removes a key hardware bottleneck on the path to fault-tolerant quantum computing - machines capable of correcting their own errors and running arbitrarily long calculations. Quantinuum has publicly targeted a universal fault-tolerant quantum computer by 2030. A reliable glitch-suppressed switch is one of many unglamorous but necessary pieces of that roadmap. The connection runs outward too: better ion-trap control electronics will drive demand for ultra-precise analog semiconductor design, a growing niche at the intersection of quantum and classical chip industries. That is precisely the broader system this patent is a node in.
Quantinuum's IP Strategy: Owning the Full Stack
When Honeywell merged its quantum division with Cambridge Quantum Computing in 2021 to form Quantinuum, the company immediately began assembling a multi-layer IP portfolio. Patents now span the hardware layer (ion traps, laser systems, cryogenic controls, and now electrode-switching circuits), the software layer (the TKET quantum compiler, the Lambeq quantum natural language processing library), and the application layer (Quantum Origin for cryptography, InQuanto for computational chemistry). US 12,689,365 is a hardware-layer patent, protecting the precise circuitry between classical computers and the quantum processor.
This matters enormously from a competitive strategy perspective. The January 2024 funding round raised $300 million at a $5 billion pre-money valuation, with investors including JPMorgan Chase, Mitsui, and Amgen alongside majority shareholder Honeywell. Then in June 2026, Quantinuum listed on Nasdaq under the ticker QNT at an opening valuation of $17.6 billion. That capital base funds aggressive IP filing across every layer of the stack. A company that controls patents on key control hardware, not just on the qubit design itself, is far harder to replicate or route around. That brings us to who should now be paying attention.
Who Should Be Watching
The most immediate audience is Quantinuum's direct competitors in the trapped-ion segment: IonQ (NYSE: IONQ), Oxford Ionics, eleQtron, AQT, and Universal Quantum. Any of these companies building transmission-gate electrode control circuits will need to assess freedom to operate around US 12,689,365 before deploying similar designs. The patent's scope is broad: it covers the integrated system of transmission gate, gate driver, and active voltage monitoring - not just one transistor geometry - making simple design-arounds non-trivial.
National laboratories and university research groups building custom ion-trap controllers should also take note. The CPC code H03K 17/162 is specific enough that a formal freedom-to-operate analysis is warranted for any similar switching architecture. Monitoring Quantinuum's broader patent family, of which this patent is one node in a systematically constructed web, is advisable for anyone working on quantum control electronics in commercial or research settings. The implications extend well beyond Broomfield, Colorado.
Control Hardware: The Invisible Bottleneck Nobody Talks About
The public narrative around quantum computing is dominated by qubit counts, quantum volume scores, and error rates. But practitioners, and increasingly investors, know that the classical control electronics are equally critical. Every qubit must be individually addressed, initialized, gated, read out, and reset, usually with sub-nanosecond timing precision. As machines scale beyond a few hundred qubits, the classical control layer can become the actual bottleneck, not qubit physics.
US 12,689,365 is one entry in what will become a very long list of control-hardware patents as the quantum industry matures. It connects trapped-ion quantum computing back to analog IC design and precision electronics industries. The demand for ultra-precise, ultra-fast switching circuits will push semiconductor design into new territory, creating a new IP landscape between the classical chip world and the quantum processor world. Companies that establish IP positions in this intermediate layer in 2026 will carry significant leverage as the global installed base of quantum computers expands through 2030 and beyond. That trajectory brings us to the final question.
So What Does It Mean for Us?
A glitch-suppression switch might seem distant from practical business decisions. Three implications stand out. First, Quantinuum's fast IP pace - priority date to grant in under three years - signals a company accelerating its patent agenda, backed by the runway of a $17.6 billion Nasdaq listing and $100 million in U.S. CHIPS Act incentives. Second, the patent's scope is broad enough to generate real IP enforcement and licensing questions within the quantum industry over the next several years, especially as more trapped-ion systems move from research labs to commercial deployments. Third, as quantum computing matures from research to regulated commercial use, the documentation ecosystem will scale with it: patents, technical specifications, regulatory filings, and SDK documentation will all require precise technical translation across jurisdictions, particularly in Asian markets where quantum investment is accelerating.
The larger pattern is clear: the race to fault-tolerant quantum computing is not only a physics contest. It is becoming an engineering and IP contest, fought at the level of control electronics, compiler software, and hardware-layer patents. The team that controls the full stack - hardware, software, and IP - will define the commercial quantum computing era. US 12,689,365 is one small but carefully placed piece of that picture. And in patent strategy, small pieces accumulate.
FAQ
What is a trapped-ion quantum computer, and how does it differ from IBM or Google's approach?
IBM and Google use superconducting circuits etched onto silicon chips, cooled near absolute zero. Trapped-ion computers, like Quantinuum's H-series, suspend individual charged atoms in electromagnetic fields. Trapped-ion qubits typically achieve higher fidelity and longer coherence times, but operate more slowly. Both approaches are serious contenders for fault-tolerant quantum computing.
What is a voltage glitch and why does it matter for quantum computing?
A voltage glitch is a brief, unintended transient spike that occurs when a switching circuit changes state. In classical electronics, such spikes are usually harmless. In an ion trap, where electrode voltages must be extremely precise, a glitch can heat or displace the trapped ion, collapsing the quantum state and corrupting the computation entirely.
How does this patent fit into Quantinuum's broader strategy?
Quantinuum is building IP across the full quantum stack: hardware (traps, lasers, control electronics), software (TKET compiler, quantum applications), and services. US 12,689,365 secures the control electronics layer connecting classical computers to the quantum processor. Owning this layer adds strategic depth that pure qubit patents alone cannot provide.
Why does patent translation matter for quantum technology IP?
Quantum patents like US 12,689,365 combine semiconductor physics, quantum mechanics, and legal claim language, making them among the most technically demanding documents to translate. As quantum IP portfolios are filed and enforced across the US, EU, Japan, China, and Korea, precise patent translation and IP translation services are essential to protect and monetize these rights in each jurisdiction.
When is Quantinuum targeting a fault-tolerant quantum computer?
Quantinuum has publicly targeted a universal fault-tolerant quantum computer by 2030. Its H2-1 machine currently runs 56 trapped-ion qubits at 99.9% two-qubit gate fidelity, described as a necessary step toward the logical qubit systems that fault tolerance requires. The glitch-suppressed switch in US 12,689,365 supports that scaling roadmap at the hardware control level.
Sources
USPTO Official Gazette Vol. 1548 No. 3 - US12689365B2, July 21, 2026 | Quantinuum - Wikipedia (2026) | Quantinuum 56-Qubit H2-1 Press Release (2024) | Markets and Markets: Quantum Computing Market Report (2025) | The Business Research Company: Quantum Computing Market 2026
About the Author
Dao Huy (Lucas) is a professional translator with over seven years of experience specializing in technical, patent, and IP translation between English, Chinese, French, and Vietnamese. He works extensively with quantum technology, semiconductor, and engineering documentation, where precise terminology is the difference between a valid patent and an unenforceable one.
If your organization needs patent translation, IP translation, or technical document localization into Vietnamese, reach out for a quote at daohuy.com. Quantum computing patents, semiconductor filings, and cross-jurisdiction IP documentation are among the specializations on offer.
Written by Dao Huy (Lucas), Vietnamese translator & localization specialist (EN · ZH · FR → Vietnamese). See translation services →