8legs: University of regensburg

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Quantum simulates properties of the first-ever half-Möbius molecule, designed by IBM and researchers

Researchers created the first molecule with a half-Möbius electronic topology, demonstrated by IBM and collaborators.
The molecule C₁₃Cl₂ was assembled atom by atom on a gold insulating layer at near absolute zero.
Quantum simulations helped decode the topology switching and confirmed a twisted molecular orbital signature.
SqDRIFT, a quantum diagonalization algorithm, ran on up to 100 qubits to study the molecule’s electronic structure.
The work combines atom-scale fabrication and quantum computing to study real quantum matter, not just a toy model.
The topology can be reversibly switched among right-handed, left-handed, and trivial states.
Quantum hardware provided interpretive power for real experimental data rather than just proofs of principle.
The research integrates Feynman’s visions of atom-by-atom engineering and quantum simulations of nature.
The team used scanning tunneling microscopy and atomic force microscopy to map and resolve molecular structure.
The study positions quantum computing as a complementary tool to classical methods in quantum chemistry.

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