Four single-spin Rabi oscillations in a quadruple quantum dot

Ito, T. and Otsuka, T. and Nakajima, T. and Delbecq, M.R. and Amaha, S. and Yoneda, J. and Takeda, K. and Noiri, A. and Allison, G. and Ludwig, Ar. and Wieck, A.D. and Tarucha, S.

Volume: 113 Pages:
DOI: 10.1063/1.5040280
Published: 2018

Scaling up qubits is a necessary step to realize useful systems of quantum computation. Here, we demonstrate coherent manipulations of four individual electron spins using a micro-magnet method in each dot of a quadruple quantum dot - the largest number of dots used for the single spin control in multiple quantum dots. We observe Rabi oscillations for each dot through electron spin resonance, evaluate the spin-electric coupling of the four dots, and finally discuss practical approaches to independently address single spins in multiple quantum dot systems containing even more quantum dots. © 2018 Author(s).

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