IQC Colloquium featuring Paul Barclay

Spin, photons and phonons: diamond nanophotonics

by Paul Barclay | University of Calgary

Defects in diamond are a promising platform for quantum information processing and sensing. Recently, the potential for coupling electron spins in these systems using mechanical resonators has attracted significant attention. Phonons in engineered nanomechanical devices, which exhibit exceptionally long coherence times in state-of-the-art demonstrations, can be coupled to a wide variety of physical systems.

Furthermore, when nanomechanical resonators are integrated within an optical cavity—realising a cavity optomechanical device—it is possible to optically control their mechanical motion. We have recently shown that cavity optomechanical devices in diamond allow spin-phonon driving. The resulting spin-photon interface is “universal”: it is independent from the optical properties of the spin system.

In this talk we discuss these results, as well as recent discoveries in nonlinear optics related to the microscopic properties of diamond defects.

Location

• QNC 0101