Chen, Xing
Greiner, Johannes N.
Wrachtrup, Jörg
Gerhardt, Ilja
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (GE2737/5-1)
European Cooperation in Science and Technology (MP1403)
Article History
Received: 23 May 2019
Accepted: 6 November 2019
First Online: 5 December 2019
Competing interests
: The authors declare no competing interests.