Multi-cavity strong coupling to an electron spin ensemble: spectral and dark-state signatures

Abstract:Spin ensembles are considered as potential candidates for quantum memory and quantum enhanced sensing applications. Here, we explore the controlled coupling of multiple superconducting microwave cavities to a spin ensemble, which shows signatures of strong coupling and, due to the multi-mode character, the formation of dark states. In particular, the latter are of interest, as they provide a potential pathway to enhance memory times and enable protected storage of non-classical states in spin ensembles due to the suppressed coupling to the circuit environment. We model the spin multi-cavity hybrid to reproduce the spectra and extract characteristic coupling strengths using the input-output formalism.

Quantum Physics (quant-ph); Materials Science (cond-mat.mtrl-sci)

arXiv:2608.05765 [quant-ph]

(or arXiv:2608.05765v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2608.05765 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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