By BitFlow UK International Desk | March 7, 2026
COPENHAGEN, Denmark — In a landmark achievement that could accelerate the development of practical quantum computers by years, researchers at the Niels Bohr Institute at the University of Copenhagen have successfully developed a high-speed monitoring system that tracks qubit fluctuations in real-time.
The Real-Time Advantage
Qubits, the fundamental building blocks of quantum computers, can undergo performance shifts in mere fractions of a second. Until now, scientists couldn't observe these rapid changes — they could only measure average energy loss rates, which masked the true and often unstable behavior of these delicate quantum states.
"This discovery opens a new path toward stabilizing and scaling future quantum processors."
The breakthrough uses commercially available hardware — specifically an FPGA-based controller from Quantum Machines called the OPX1000 — combined with new adaptive measurement techniques. This system updates its internal Bayesian model after every single qubit measurement, keeping pace with the qubit's changing environment. The system operates on nearly the same timescale as the fluctuations themselves, making it roughly 100 times faster than previously demonstrated methods.
Global Collaboration Powers Innovation
The project represents a significant international collaboration, involving scientists from the Niels Bohr Institute's Center for Quantum Devices, the Novo Nordisk Foundation Quantum Computing Programme, the Norwegian University of Science and Technology, Leiden University, and Chalmers University.
Postdoctoral researcher Dr. Fabrizio Berritta led the development of the real-time adaptive measurement system. Associate Professor Morten Kjaergaard from the Niels Bohr Institute led the research group that made the integration of this controller with advanced quantum hardware possible.
Why This Matters
The breakthrough addresses one of the most critical challenges in quantum computing: qubit stability. Qubits are extremely sensitive to microscopic imperfections in the materials used to build them. These defects can shift position hundreds of times per second, causing qubits to lose energy and valuable quantum information.
Until recently, standard testing methods took up to a minute to measure qubit performance — far too slow to capture the rapid fluctuations that could destroy quantum information. The new approach relies on a fast classical controller that updates its estimate of a qubit's relaxation rate within milliseconds, matching the natural speed of the fluctuations themselves.
"Scientists did not previously know just how quickly fluctuations occur in superconducting qubits. These experiments have now provided that insight."
The Path Forward
As FPGA-based controllers are already used in other scientific and engineering fields, their integration with quantum hardware could accelerate the field significantly. The commercially available nature of the OPX1000 controller makes it accessible to research groups worldwide, democratizing access to advanced quantum control technology.
This breakthrough represents not just a technical achievement, but a paradigm shift in how scientists approach quantum system monitoring. It suggests that the future of quantum computing depends not only on building larger quantum systems but on mastering the art of keeping them stable and predictable.
The research is published in peer-reviewed scientific literature and has already garnered attention from major technology companies and research institutions globally. As quantum computing transitions from theoretical to practical applications, breakthroughs like this will determine how quickly we can move from laboratory experiments to real-world quantum applications in medicine, finance, materials science, and cryptography.