Abstract
Molecules featuring a spin optical interface comprise an attractive platform for quantum information science (QIS) applications, in particular quantum sensing. These systems can be realized by harnessing synthetic chemistry to create analogous electronic structures to solid-state spin defects featuring a spin-optical interface. Molecules featuring ground state spin control enable rational tuning of electron spin properties and the construction of precise multi-qubit arrays, opening a new area of molecular color centers primed for quantum sensing and communication.. The advent of this area opened a new area of molecular color centers primed for quantum sensing and communication applications. Indeed, spin-optical interfaces have been realized across a variety of coordination complexes and organic radicals. For each system, we describe the electronic structure considerations and specific mechanisms that enable optical addressability and highlight the diverse optical initialization and readout schemes in the literature, providing inspiration for future compounds that could improve and expand upon the current generation of molecular color centers.
