Nitrogen vacancy (NV) centres in diamond for fun and profit*

We have proposed [1] and begun developing [2-4] an experiment in which a 1 μm diamond containing an NV centre would be put into a superposition of being in two places at once with a superposition distance of 1 μm. This builds on our previous proposals [5-7] and others [8].

Separately, we have shown that laser-writing allows NV centres to be created in chosen locations inside of a diamond, deep enough to allow solid immersion lenses to be made around them, and with spin coherence times at least as long as naturally occurring NV centres [9].

We are also developing a fibre-coupled magnetometer with an NV ensemble towards possible medical applications [10].

[1] S Bose & GW Morley, arXiv:1810.07045 (2018)
[2] ATMA Rahman et al, Sci. Rep. 6, 21633 (2016)
[3] ATMA Rahman, AC Frangeskou, PF Barker & GW Morley, Rev. Sci. Instrum. 89, 023109 (2018)
[4] AC Frangeskou et al, New J. Phys. 20, 043016 (2018)
[5] M Scala et al., Phys. Rev. Lett. 111, 180403 (2013)
[6] C Wan et al., Phys. Rev. Lett. 117, 143003 (2016)
[7] S Bose et al., Phys. Rev. Lett. 119, 240401 (2017)
[8] Z-q Yin, T Li, X Zhang & LM Duan, Phys. Rev. A 88, 033614 (2013)
[9] CJ Stephen et al., arXiv:1807.03643 (2018)
[10] MW Dale & GW Morley, arXiv:1705.01994 (2017)