Nanoscale Fluorescence Lifetime Imaging of an Optical
Antenna with a Single Diamond NV Center
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Abstract
Solid-state quantum emitters, such
as artificially engineered quantum
dots or naturally occurring defects in solids, are being investigated
for applications ranging from quantum information science and optoelectronics
to biomedical imaging. Recently, these same systems have also been
studied from the perspective of nanoscale metrology. In this letter,
we study the near-field optical properties of a diamond nanocrystal
hosting a single nitrogen vacancy center. We find that the nitrogen
vacancy center is a sensitive probe of the surrounding electromagnetic
mode structure. We exploit this sensitivity to demonstrate nanoscale
fluorescence lifetime imaging microscopy (FLIM) with a single nitrogen
vacancy center by imaging the local density of states of an optical
antenna