Speaker
Description
Rare-earth ions exhibit exceptional magnetic and optical properties, making them attractive systems for applications in quantum information science. While significant progress has been achieved in the storage of optical quantum states, the direct storage and coherent manipulation of microwave quantum states remains an important open challenge.
Here, we investigate broadband control of rare-earth spin ensembles over a wide range of microwave frequencies while preserving efficient readout of stored excitations. Our approach combines superconducting technologies with newly developed microfabrication techniques to enhance microwave-spin coupling and enable flexible device architectures. These methods also provide access to fundamental properties of rare-earth spin ensembles with improved precision. The developed platforms represent a step toward rare-earth-based hybrid quantum systems for microwave quantum memories and coherent quantum-state transfer.
