Key Findings
Diraq and imec, a leading Belgian R&D hub in nanoelectronics, announced in Nature in 2025 that silicon spin qubits fabricated on imec’s existing 300-millimeter silicon manufacturing platform achieved over 99% fidelity for both 1-qubit and 2-qubit gate operations. Furthermore, they demonstrated an impressive 99.9% fidelity for state preparation and measurement, marking a breakthrough achievement for silicon-based quantum computing.
Technical / Clinical Details
The key to this achievement lies in its high compatibility with imec’s standard CMOS manufacturing processes. The ability to fabricate qubits on a 300-millimeter platform means that the infrastructure of the cutting-edge semiconductor industry can be directly leveraged for quantum computing. This significantly broadens the potential for future large-scale production and cost reduction. Silicon spin qubits have long been considered a strong candidate for scalable quantum computing due to their high integrability, relatively long coherence times, and compatibility with existing transistor technologies. The achieved gate fidelity of over 99% approaches the critical threshold required for quantum error correction, an indispensable element for realizing fault-tolerant quantum computing. The team led by Andrew Dzurak has successfully overcome this significant technical challenge, laying a robust foundation for the construction of practical quantum computers.
- Collaborating Institutions: Diraq and imec (Belgium).
- Manufacturing Platform: imec’s 300-millimeter silicon manufacturing platform.
- Qubit Type: Silicon spin qubits.
- Fidelity Achieved: Over 99% for 1- and 2-qubit gate operations; 99.9% for state preparation and measurement.
- Significance: Enhances scalability and performance of silicon-based quantum computing, demonstrating compatibility with existing CMOS technology.
Background & Context
For the commercialization of quantum computing, the ability to manufacture a large number of qubits and control them with high precision is paramount. While many qubit technologies are under research, silicon-based qubits hold a significant advantage in scalability due to their compatibility with the microfabrication techniques honed over decades in the semiconductor industry. Previously, achieving high-fidelity operations for silicon spin qubits was challenging, but this announcement indicates that a major barrier in this field is being overcome. This reinforces the position of silicon-based approaches in the race towards realizing large-scale quantum computers.
Strategic Significance & Outlook
This breakthrough represents a crucial step for silicon-based quantum computers to progress into the fault-tolerant stage. The ability to utilize existing CMOS fabrication lines has the potential to drastically reduce the production cost of quantum chips in the future and accelerate commercialization. This strengthens the technological foundation for the practical implementation of quantum computers across all fields, including drug discovery, materials science, and financial modeling. Investors will find new opportunities in silicon-based quantum technologies, particularly in companies like Diraq that are successfully demonstrating both high fidelity and scalability.
Source: https://quantumzeitgeist.com/andrew-dzurak/
Get our weekly technology intelligence — free
Receive an infographic that lets you judge at a glance whether each field’s analysis report is worth reading.
Subscribe Free — Weekly Tech Intelligence
By subscribing, you’ll receive Troy-Technical’s weekly technology intelligence newsletter.
- Your email and selected fields are used only to deliver the newsletter.
- We never share your information with third parties.
- You can unsubscribe anytime via the link in each email.
See our Privacy Policy for details.
Takes about a minute · Unsubscribe anytime
Comments