Electric-Field Quantum Sensing Exploiting a Photogenerated Charge-Transfer Triplet State in an Organic Molecule.

ABSTRACT: Molecular spin systems are promising platforms for quantum sensing due to their chemically tunable Hamiltonians, enabling tailored coherence properties and interactions with external fields. However, electric field sensing remains challenging owing to typically weak spin-electric coupling (SEC) and limited directional sensitivity. Addressing these issues by using heavy atoms exhibiting strong atomic spin-orbit couplings (SOC) often compromises spin coherence times. Here, we demonstrate coherent electric field sensing using a photogenerated charge-transfer (CT) spin triplet state in the organic molecule ACRSA (10-phenyl-10H,10'H-spiro[acridine-9,9'-anthracen]-10'-one). By embedding electric field pulses within a Hahn echo sequence, we coherently manipulate the spin triplet and extract both

SUBMITTER: Fontana N 

PROVIDER: S-EPMC12766726 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature