Room-temperature magnetic gradiometry with fiber-coupled nitrogen-vacancy centers in diamond.
Differential optical detection of a magnetic resonance induced in nitrogen-vacancy (NV) centers in diamond is shown to enable a high-spatial-resolution room-temperature magnetic-field gradiometry on a fiber platform. An ultracompact design of this fiber-based solid-state magnetic gradiometer is achieved by integrating an NV-diamond magnetic sensor with a two-fiber opto-microwave interface, which couples NV centers to microwave and optical fields, used to resonantly drive and interrogate the spin of NV centers.
S M
SM
Blakley
I V
IV
Fedotov
S Ya
SY
Kilin
A M
AM
Zheltikov