Optical readout of electron spin states in diamond NV centers for quantum and nanoscale photonics
Simeon Bogdanov, Mikhail Y. Shalaginov, Abhishek B. Solanki +6 more
Nitrogen-vacancy centers in diamond have been long used for spin-based optical sensing and also considered viable candidates for implementing quantum information protocols using their spin degree of freedom. Their nanoscale size and the possibility of optical spin readout make them particularly attractive for the use in integrated nanophotonic and quantum optical devices. We will discuss how the optical Purcell effect in plasmonic systems affects the NV spin readout signal and present the demonstration of this readout through optical plasmons in an integrated nanophotonic interface. We will show that spin relaxometry is a powerful tool that allows to probe the magnonic density of states and its electrical tuning with sub-um spatial resolution. Furthermore, we will discuss how spin signal readout sensitivity can be enhanced with the use of plasmonic nanostructures deterministically assembled on the nanoscale.
Optical and Quantum Sensing and Precision Metrology•Mar 4, 2021•0 citations