%0 Journal Article
%A Fedele, Federico
%A Cerisola, Federico
%A Bresque, Lea
%A Vigneau, Florian
%A Monsel, Juliette
%A Tabanera Bravo, Jorge
%A Aggarwal, Kushagra
%A Dexter, Jonathan
%A Sevitz, Sofia
%A Rodríguez Parrondo, Juan Manuel
%T Coupling a single spin to the motion of a carbon nanotube
%D 2025
%U https://hdl.handle.net/20.500.14352/130789
%X The ability to couple a solitary spin to high-frequency motion is a crucial advancement for a range of applications, including quantum sensing, intermediate and long-distance spin-spin coupling, and quantum information processing. Although proposed theoretically over a decade ago, experimental demonstrations have remained elusive. Here we report the observation of spin-mechanical coupling in a carbon nanotube device. We demonstrate this coupling in two configurations: off-resonant, with spin and mechanics excited by separate tones, and resonant, driven by a single tone. The coupling manifests as a shift and broadening of the electric dipole spin resonance (EDSR), respectively. Our theoretical model, which accounts for the tensor character of the coupling and mechanical non-linearity, reproduces the data with very good agreement. Our results demonstrate a previously unobserved spin-mechanical coupling, offering versatile tools for exploring macroscopic quantum phenomena, quantum thermodynamics, and quantum simulation.
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