Coupling of single quantum dots to photonic crystal cavities investigated by low-temperature scanning near-field optical microscopy


We report a study of single quantum dots inside photonic crystal cavities with a low-temperature scanning near-field optical microscope. The spatial maps of single excitonic lines from the quantum dot show the clear signature of coupling to the cavity modes for small detunings. We also show that the near-field tip can be used to control the exciton-photon coupling at the nanoscale. A general framework for the interpretation of near-field maps of single emitters in cavities is proposed. © 2013 American Physical Society.

Publication Title

Physical Review B - Condensed Matter and Materials Physics