Agenda

Nouveau : Séminaire optique

Tomasz Jakubczyk
(Université de Bâle et Université de Varsovie)

Jeudi 1er juillet 2021 à 9h30

Zoom link: https://smartvisio2.neel.cnrs.fr/b/flo-ivm-y7c

Title: « Creating low charge-noise nitrogen-vacancy centers in diamond »

Abstract: The negatively charged nitrogen-vacancy (NV) center in diamond is among the most promising solid-state systems implementations of a quantum bit. However, its poor single-photon emission characteristics requires integration of the NV center into a photonic environment and hence microstructuring the diamond at below-micrometer scale. Preserving the low NV zero-phonon line inhomogeneous broadening during this process is a major challenge with standard NV creation methods. This issue severely limits practical applications of NV centers.

I will present our recent attempts at the University of Basel to identify the sources and mitigate the charge-noise problem negatively impacting NV centers.   Among others, we employed laser writing [1] and implantation of N14 and N15 isotopes [2], all giving new insights into the problem and allowing us to improve the quality of the resulting NVs.