Defect centers in diamond can form highly versatile sensors that are capable of being used in many areas of quantum research. Their solid-state nature may allow us to develop high-performance devices that are quite portable and surpass the abilities of standard, classical systems.
Lincoln Laboratory Staff
Danielle Braje, Linh Pham, Chris McNally, John Barry
A diamond crystal structure highlights a nitrogen defect adjacent to a missing carbon in the lattice together forming a nitrogen-vacancy (NV) center. These nitrogen-vacancy centers can be addressed optically by sending green light into a small diamond chip and observing red fluorescence. Each diamond sample contains many NV centers and they can be addressed in parallel and used as sensitive magnetic field sensors.
Develop high-conversion-efficiency, high-NV-density diamonds for magnetometry
Characterize and optimize diamond material for nitrogen-vacancy based quantum sensors
The exciting green laser is housed in the metal box with the window through which the diamond is visible.
Build high-sensitivity ensemble sensors
Establish the efficient use of large ensembles of nitrogen-vacancy (NV) centers for sensing applications
This diamond optical micro-resonator may enable resonant interaction with the NVs within and allow for enhanced sensors.
Develop power-budget-optimized quantum sensors in a compact form factor
Design an optical and microwave resonator to enhance the capability of NV magnetic field sensors
Develop laser threshold magnetometry using a whispering gallery mode resonator