Quantum scientists have made a groundbreaking discovery in purple bronze, a one-dimensional metal that has the potential to revolutionize quantum technology. This discovery may pave the way for the development of a ‘perfect switch’ in quantum devices that seamlessly transitions between an insulating state and a superconducting state, allowing for unparalleled conductivity.
The University of Bristol led an extensive research effort, which concluded that purple bronze contains opposing electronic states, existing in a unique one-dimensional metal composed of individual conducting chains of atoms. Minute adjustments, such as changes induced by heat or light, can lead to an immediate shift from an insulating state to a superconducting state, and vice versa. This incredible capability, known as ‘emergent symmetry’, presents an unparalleled opportunity for creating efficient On/Off switches in future quantum technologies.
The figure represents emergent symmetry, showcasing a perfectly symmetric water droplet emerging from a layering of snow, highlighting the complex shape of the ice crystals within the snow. The purple color in the figure signifies the purple bronze material where this phenomenon was first identified. This finding could be the key to unlocking a new era of quantum technology.
The research journey began 13 years ago when two PhD students, Xiaofeng Xu, and Nick Wakeham, measured the magnetoresistance of purple bronze. The initial findings, which were complex and seemed to lack a coherent explanation, were shelved for seven years. However, in 2017, Professor Nigel Hussey encountered physicist Dr Piotr Chudzinski, who proposed an experiment to test a new theory. This encounter ultimately led to a ground-breaking discovery.
Dr. Chudzinski’s theory, supported by subsequent measurements, showcased that purple bronze exhibited simple magnetic response despite its complex origin. It was a disjointed revelation that had remained unexplained for years. This unique occurrence, described as ‘emergent symmetry,’ is a rare phenomenon in the field of quantum research.
In conclusion, the complex origin of purple bronze, combined with the principle of ‘emergent symmetry,’ holds extraordinary promise for the development of advanced quantum technology. The potential use of this phenomenon could lead to the creation of incredibly efficient switches, contributing to the advancement of quantum devices in ways previously thought impossible. This discovery marks a significant milestone in the field of quantum technology.
Reference:
“Emergent symmetry in a low-dimensional superconductor on the edge of Mottness” by P. Chudzinski, M. Berben, Xiaofeng Xu, N. Wakeham, B. Bernáth, C. Duffy, R. D. H. Hinlopen, Yu-Te Hsu, S. Wiedmann, P. Tinnemans, Rongying Jin, M. Greenblatt and N. E. Hussey, 16 November 2023, Science.
DOI: 10.1126/science.abp8948.
