*Naoya Morioka1, Roland Nagy1, Matthias Niethammer1, Izel Gediz1, Erik Hesselmeier1, Matthias Widmann1, Yu-Chen Chen1, Roman Kolesov1, Péter Udvarhelyi2, Cristian Bonato3, Jawad Ul Hassan4, Robin Karhu4, Ivan Gueorguiev Ivanov4, Nguyen Tien Son4, Jeronimo R. Maze5, Takeshi Ohshima6, Öney O. Soykal7, Ádám Gali2, Sang-Yun Lee8, Florian Kaiser1, Jörg Wrachtrup1
(1. Univ. of Stuttgart(Germany), 2. Hungarian Academy of Sci.(Hungary), 3. Heriot-Watt Univ.(UK), 4. Linköping Univ.(Sweden), 5. Pontifical Catholic University of Chile(Chile), 6. National Inst. for Quantum and Radiological Sci. and Tech.(Japan), 7. Naval Res. Lab.(United States of America), 8. Korea Inst. of Sci. and Tech.(Korea))