Quantum Campus shares the latest in quantum science and technology. Read by more than 1,900 researchers, we publish on Fridays and are always looking for news from across the country. See something interesting? Be sure to share it.

Using code concatenation to nest quantum error-detection codes, a team at Quantinuum announced that they created 48 error-corrected logical qubits out of just 98 physical qubits. They then used the trapped-ion-based logical qubits to run a quantum magnetism simulation. Their error-detection code was first described in Nature Physics in 2024.

The team published a paper about the work on arXiv and an announcement on the Quantinuum website.

Researchers from Oxford, the University of Manchester, and IBM synthesized what is known as a “half-Mobius molecule” with electrons taking unusual twists around a ring of atoms reminiscent of a Mobius strip. The team also demonstrated reversible switching of the molecule’s topology. Large-scale sample-based quantum diagonalization calculations on IBM quantum hardware and classical hardware showed that the switching is associated with a helical pseudo Jahn-Teller effect.

“The fact that such a molecule has not only been theoretically proposed but has actually been synthesized will have a major impact on the field of molecular science,” Yasutomo Segawa, a researcher at the Institute for Molecular Science in Japan, told Scientific American.

This work was published in Science. It was also covered in Ars Technica, which said “there was, to put it mildly, a lot going on in this paper.”

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Physicists at Rice improved upon standard angle-resolved photoemission spectroscopy by adding an external, tunable magnetic field, allowing them to retain additional momentum-resolved electronic spectral information that is typically lost. The team used their “magnetoARPES” technique to explore symmetry breaking in a kagome superconductor.

This work was published in Nature Physics.

Quantum Campus is edited by Bill Bell, a science writer and marketing consultant who has covered physics and high-performance computing for more than 25 years. Disclosure statement.