Quantum Nature of Nuclear Spins Confirmed: Implications for Quantum Tech

For over half a century, physicists have largely operated under the assumption that freely spinning subatomic particles behave classically, similar to a spinning wheel. A recent study, however, challenges this long-held belief by demonstrating the quantum nature of nuclear spins through intricate single-atom measurements. Researchers, including Prof. Scarani and Mr. Zaw Lin Htoo, hypothesized that under specific conditions, the quantum nature of an atomic nucleus could be definitively observed. Collaborating with Prof. Morello's team at UNSW, they used an antimony nucleus and precise rotational measurements to test this theory. The team created a 'Schrödinger cat state,' a unique quantum state, and observed its behavior. The UNSW team, led by Mr. Arjen Vaartjes and Dr. Martin Nurizzo, validated the quantum deviation, proving theoretical predictions correct. This discovery, made as the United Nations recognizes 2025 as the International Year of Quantum Science and Technology, marks a fundamental advancement in understanding the quantum world and could potentially influence future quantum technologies.