Quantum leap for data storage as Toronto team spots ‘octupolar’ magnetism

University of Toronto physicists have detected an unusual magnetic order defined by eight poles, challenging the conventional understanding of magnetism rooted in simple north and south orientations.

The team established a new method for observing these elusive quantum magnetic states by using light to probe atomic vibrations caused by electron spin, a technique that bypasses limitations of traditional methods. “We identified new signatures of a hidden type of magnetic state which cannot be detected using ordinary probes,” says Arun Paramekanti, a professor at the University of Toronto, whose work published in Physical Review Letters represents a critical first step toward using multi-polar magnetism for technologies like controllable read-write memory. Light-Based Probing Reveals Elusive Octupolar Magnetic States This approach allowed researchers to identify previously hidden signatures of the octupolar magnetic state within crystalline materials, revealing a pattern of eight magnetic poles instead of the standard two. Rory Sutcliffe and Kathleen Hart, PhD candidates, were instrumental in establishing this light-based observation method, focusing on the subtle movements within the magnetic material. Detecting these higher-order magnetic states could lead to advancements in data storage and computing. We identified new signatures of a hidden type of magnetic state which cannot be detected using ordinary probes. Arun Paramekanti, Professor in the Department of Physics and the Centre for Quantum Information & Quantum Control at the University of Toronto Source: https://cqiqc.physics.utoronto.ca/news/recent-news/u-of-t-physicists-identify-octupolar-magnetism-with-implications-for-quantum-technologies/ More like thisQuantum Research NewsSimulations show gains with a hybrid quantum repeater chainQuantum Research NewsHole spin qubits gain ground with in-plane controlQuantum PhysicsQuantum codes now protect against more photon losses than beforeQuantum Research NewsA new technique simplifies designing high-fidelity quantum gatesStay currentSee today’s quantum computing news on Quantum Zeitgeist for the latest breakthroughs in qubits, hardware, algorithms, and industry deals. Tags: Dr. Donovan Dr. Donovan is a futurist and technology writer covering the quantum revolution. Where classical computers manipulate bits that are either on or off, quantum machines exploit superposition and entanglement to process information in ways that classical physics cannot. Dr. Donovan tracks the full quantum landscape: fault-tolerant computing, photonic and superconducting architectures, post-quantum cryptography, and the geopolitical race between nations and corporations to achieve quantum advantage. The decisions being made now, in research labs and government offices around the world, will determine who controls the most powerful computers ever built. Latest Posts by Dr. Donovan: Simulations show gains with a hybrid quantum repeater chain October 20, 2026 Interactive proofs let a quantum computer outsource memory tasks October 20, 2026 Nearly all mobile apps lack quantum-safe encryption, NowSecure finds October 20, 2026