Observation of perfect absorption in hyperfine levels of molecular spins with hermitian subspaces.

ABSTRACT: We investigate Perfect Absorption (PA) of radiation, in which incoming energy is entirely dissipated, in a system consisting of molecular spin centers coherently coupled to a planar microwave resonator operated at milliKelvin temperature and in the single photon regime. This platform allows us to fine tune the spin-photon coupling and to control the effective dissipation of the two subsystems towards the environment, thus giving us the opportunity to span over a wide space of parameters. Our system can be effectively described by a non-Hermitian Hamiltonian exhibiting distinct Hermitian subspaces. We experimentally show that these subspaces, linked to the presence of PA, can be engineered through the resonator-spin detuning, which controls the composition of the polaritons in terms of phot

SUBMITTER: Bonizzoni C 

PROVIDER: S-EPMC12800288 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature