@article{8b705c4e5bbe4561aa8ae25d70cc026d,
title = "Coherent electron-spin-resonance manipulation of three individual spins in a triple quantum dot",
abstract = "Quantum dot arrays provide a promising platform for quantum information processing. For universal quantum simulation and computation, one central issue is to demonstrate the exhaustive controllability of quantum states. Here, we report the addressable manipulation of three single electron spins in a triple quantum dot using a technique combining electron-spin-resonance and a micro-magnet. The micro-magnet makes the local Zeeman field difference between neighboring spins much larger than the nuclear field fluctuation, which ensures the addressable driving of electron-spin-resonance by shifting the resonance condition for each spin. We observe distinct coherent Rabi oscillations for three spins in a semiconductor triple quantum dot with up to 25 MHz spin rotation frequencies. This individual manipulation over three spins enables us to arbitrarily change the magnetic spin quantum number of the three spin system, and thus to operate a triple-dot device as a three-qubit system in combination with the existing technique of exchange operations among three spins.",
author = "A. Noiri and J. Yoneda and T. Nakajima and T. Otsuka and Delbecq, {M. R.} and K. Takeda and S. Amaha and G. Allison and A. Ludwig and Wieck, {A. D.} and S. Tarucha",
note = "Funding Information: We thank the Microwave Research Group in Caltech for technical supports. Part of this work is financially supported by the ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan) and Project for Development Systems of the Ministry of Education, Culture, Sports, Science and Technology, Japan, and the IARPA project {"}Multi-Qubit Coherent Operations{"} through Copenhagen University. A.N. acknowledges support from Advanced Leading Graduate Course for Photon Science (ALPS). J.Y. and T.O. acknowledge financial support from RIKEN Incentive Research Projects. T.N. acknowledges financial support from JSPS KAKENHI Grant No. 25790006. T.O. acknowledges financial support from the Grant-in-Aid for Research Young Scientists B, Yazaki Memorial Foundation for Science and Technology Research Grant, Japan Prize Foundation Research Grant, Advanced Technology Institute Research Grant, the Murata Science Foundation Research Grant, Izumi Science and Technology Foundation Research Grant, CREST, JST. S.T. acknowledges financial support by JSPS, Grant-in-Aid for Scientific Research (No. 26220710). A.L. and A.D.W. acknowledge gratefully support of Mercur Pr-2013-0001, DFG-TRR160, BMBF - Q.com-H 16KIS0109, and the DFH/UFA CDFA-05-06. Publisher Copyright: {\textcopyright} 2016 AIP Publishing LLC.",
year = "2016",
month = apr,
day = "11",
doi = "10.1063/1.4945592",
language = "English",
volume = "108",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "15",
}