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arXiv · 1808.06180

Coherent control of individual electron spins in a two dimensional array of quantum dots

Pierre-Andre Mortemousque·Emmanuel Chanrion·Baptiste Jadot·Hanno Flentje·Arne Ludwig·Andreas D. Wieck·Matias Urdampilleta·Christopher Bauerle·Tristan Meunier
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Abstract

The ability to manipulate coherently individual quantum objects organized in arrays is a prerequisite to any scalable quantum information platform. For electron spin qubits, it requires the fine tuning of large arrays of tunnel-coupled quantum dots. The cumulated efforts in linear dot arrays have permitted the recent realization of quantum simulators and multi-electron spin coherent manipulation. However, the two-dimensional scaling of such implementations remains undemonstrated while being compulsory to resolve complex quantum matter problems or process quantum information. Here, we demonstrate the two-dimensional coherent control of individual electron spins in a 3x3 array of tunnel-coupled quantum dots. More specifically, we focus on several key quantum functionalities of such control: charge deterministic displacement, local spin readout, local coherent exchange manipulation between two electron spins trapped in adjacent dots, and coherent multi-directional spin shuttling over distances of several microns. This work lays the foundations for exploiting a two-dimensional array of electron spins for quantum simulation and information processing.

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Pierre-Andre Mortemousque, Emmanuel Chanrion, Baptiste Jadot, Hanno Flentje, Arne Ludwig, Andreas D. Wieck, Matias Urdampilleta, Christopher Bauerle, Tristan Meunier. 2018-08-19. Coherent control of individual electron spins in a two dimensional array of quantum dots. https://arxiv.org/abs/1808.06180

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