Müller, C.
Kong, X.
Cai, J.-M.
Melentijević, K.
Stacey, A.
Markham, M.
Twitchen, D.
Isoya, J.
Pezzagna, S.
Meijer, J.
Du, J. F.
Plenio, M. B.
Naydenov, B.
McGuinness, L. P.
Jelezko, F.
Article History
Received: 22 January 2014
Accepted: 15 July 2014
First Online: 22 August 2014
Competing interests
: The authors declare no competing financial interests.