How the University of Sussex set a quantum sensing world record

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University of Sussex scientists have developed the world's most sensitive electric field detector — over a hundred times more powerful than traditional sensors. This breakthrough, published in Nature Physics and featured on BBC Radio 4, demonstrates how the university is leading the way in real-world quantum innovation.

Here's what it means for the future of quantum technology — and for our students.

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The breakthrough came from the Sussex Centre for Quantum Technologies, where researchers used a single trapped ion — a charged atom held in a vacuum system — to measure electric fields with unprecedented accuracy. This quantum sensing technique has shattered the previous world record by two orders of magnitude, making it around 100 times more powerful than existing methods.

The research, published in Nature Physics, represents a significant leap forward in quantum sensing capabilities. Professor Winfried Hensinger, director of the Sussex Centre for Quantum Technologies, explained the innovation:

"We have built a machine that makes use of single charged atoms (ions), capable of unprecedented measurement capability. We have managed to tame some of the very strange phenomena of quantum physics to create a device that can detect low frequency electric fields with unprecedented sensitivity."

What makes this achievement particularly remarkable is its potential for further enhancement. The team has already developed a microchip that could boost sensitivity by another 10,000 times, potentially making the system one million times more powerful than current technology.

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This breakthrough is not just about elevating quantum computing – it offers tangible benefits in various industries. Here are some of the key applications being explored as a result of the discovery:

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One of the most exciting implications of this technology is its potential to revolutionise brain scanning and neuroscience research. With the ability to produce detailed 3D imaging of electrical activity within the brain, this advancement could help medical experts pinpoint regions related to mental health conditions or epilepsy.

Professor James Stone from the Brighton and Sussex Medical School explains:

“It could potentially lead to huge breakthroughs in our understanding of consciousness, as well as of mental illness, and may even be useful in neurofeedback treatments for mental health conditions such as OCD or depression by allowing people to visualise their brain activity and respond directly to it. It could also be useful in neurological conditions such as epilepsy – detecting regions of abnormal activity in deeper brain regions than would be possible with existing EEG methods.”

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Quantum sensing can significantly enhance the ability to detect submarines and enable superior underwater communication. Existing sensing methods are often limited in detecting and interpreting signals beneath water. The unprecedented accuracy of the University of Sussex’s quantum sensing addresses many of these challenges, providing a key advantage for defence and communication technologies.

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From mapping mineral deposits to detecting natural resources buried beneath the Earth’s surface, the heightened sensitivity of this sensing method offers geologists a powerful tool. By measuring electric field changes, this innovation could lead to faster, more precise discoveries of valuable resources – impacting industries ranging from mining to renewable energy.

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Quantum computers rely on environments free from any electric field noise, which can disrupt computations. The University of Sussex’s technique not only detects this interference better than any other tool but also enables researchers to identify and eliminate it. This paves the way for quantum machines operating at unprecedented scales in the near future.

Learn more about real-world quantum technology applications.

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The Sussex Centre for Quantum Technologies represents a unique research environment where theoretical breakthroughs translate into practical applications. This world-record discovery emerged from the team's work on quantum computing — they developed the ultra-sensitive detector to eliminate electrical noise that can interfere with quantum computers.

The research culture at Sussex emphasises collaboration between disciplines. Students and researchers work alongside world-leading experts who maintain strong connections with industry partners and government agencies. The university's commitment to quantum research has attracted around £100 million in funding, with plans to create a 'Quantum Valley' in Sussex.

The proximity to cutting-edge research means students don't just study quantum technology — they contribute to its development. Many MSc students participate in live research projects, gaining hands-on experience with the same equipment and techniques used in breakthrough discoveries.

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Our online MSc in Quantum Technology Applications and Management combines scientific theory with practical business applications. Students develop quantum literacy whilst learning to commercialise emerging technologies — skills that are increasingly valuable as quantum research transitions from laboratory to market.

The programme covers the full spectrum of quantum research, from fundamental physics to real-world applications like the electric field detector. Students learn about:

• Quantum sensing and imaging techniques

• Photonics and atom-light interactions

• Quantum networks and secure communications

• Materials for quantum and nanotechnologies

• Market analysis and technology commercialisation

What sets this Masters degree apart is the integration of business-focused learning with cutting-edge science. Students don't just understand the technology — they learn how to bring it to market, assess its economic potential, and develop strategies for quantum entrepreneurship.

The programme's flexibility allows working professionals to study alongside their careers, with six start dates per year and online delivery that accommodates global participants. Many students form connections that lead to career opportunities in the rapidly expanding quantum technology sector.

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Explore our online Quantum Technology Applications and Management MSc programme today.

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