Tip-enhanced Raman Spectroscopy (TERS) combines the chemical analysis of the Raman technique with the increased sensitivity of the SERS (Surface Enhanced Raman Spectroscopy) approach and the nanometric spatial resolution of the Scanning Probe Spectroscopy (SPM). Since the technique uses a Raman spectrometer, Tip-Enhanced Photoluminescence (TEPL) is also possible for probing chemical, electrical and optical properties at the nanoscale. The spectroscopy information is provided along with all the measurements enabled by SPM, such as topography and electrical and mechanical properties. The advantages of these spectroscopies, namely the lateral resolution beyond the diffraction limit and the non-destructive, label-free and in-air interaction, open new possibilities for nanotechnology and quantum applications. A new TERS/TEPL equipment was recently installed in the FBK-SD laboratories. This PhD project aims to set up the TERS/TEPL techniques and apply them to the study of optical and morphological properties of semiconductor materials, also nanostructured, used for quantum technologies, down to the single quantum object scale. This research activity will be carried out in the framework of some ongoing projects on quantum sensors and devices at FBK-SD.