Metal–metal bonded molecule achieves stable spin qubit state, opening path toward quantum computing materials
phys.org/news/2026-01-metalmetal-bonded-molecule-stable-qubit.html
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Cobalt Molecule with Metal Bonds Shows Stable Spin-Qubit StatesThe Chemical Communications study examines Co₃(dpa)₄Cl₂ for use in quantum information technologies.
- Co₃(dpa)₄Cl₂ consists of three linearly arranged cobalt ions and can change its spin state as a spin-crossover material.
- Magnetic measurements and pulsed EPR spectroscopy showed slow magnetic relaxation and sufficiently long spin lifetimes.
- The electron spin is delocalized across all three cobalt ions; clear Rabi oscillations also demonstrated coherent manipulation.
- The results experimentally showed for the first time that a metal-bonded molecule can function as a spin qubit, providing new design strategies.
This work opens a new pathway for designing molecular qubits.— Professor Shinya Hayami, Kumamoto University, who led the study.
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element, compound, or alloy that is a good conductor of both electricity and heat
academic journal of the American Association for the Advancement of Science
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