Diamond-based hybrid quantum technology

The controlled interfacing of individually well-isolated atoms is one of the outstanding challenges for bottom-up assemblies of complex quantum systems. We are aiming to establish color centers in nanodiamonds as a new potential building block for solid-state based quantum technology. We employ advanced diamond growth and surface treatment in combination with resonant and off-resonant excitation to isolate single color centers in each nanodiamond with atom-like spectral properties. Furthermore, we utilize atomic force microscope cantilevers for nano-manipulation of individual nanodiamonds to achieve controlled coupling between color centers located in different nanodiamonds. Our work is targeted to develop complex quantum systems in a bottom-up approach.

Selected references:
L. J. Rogers, et al., „Single SiV- centers in low-strain nanodiamonds with bulk-like spectral properties and nano-manipulation capabilities“. 
Phyical Review Applied 11, 024073 (2019)

U. Jantzen, et al., „Nanodiamonds carrying silicon-vacancy quantum emitters with almost lifetime-limited linewidths“. New Journal of Physics 18, 073036 (2016)