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23 April 2024

» arxiv » 1503.2928

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Spin-Coherent Dot--Cavity Electronics
Clemens Rössler ; David Oehri ; Oded Zilberberg ; Gianni Blatter ; Matija Karalic ; Jana Pijnenburg ; Andrea Hofmann ; Thomas Ihn ; Klaus Ensslin ; Christian Reichl ; Werner Wegscheider ;
Date:	10 Mar 2015
Abstract:	Quantum engineering requires controllable artificial systems with quantum coherence exceeding the device size and operation time. This can be achieved with geometrically confined low-dimensional electronic structures embedded within ultraclean materials, with prominent examples being artificial atoms (quantum dots) and quantum corrals (electronic cavities). Combining the two structures, we implement a mesoscopic coupled dot--cavity system in a high-mobility two-dimensional electron gas, and obtain an extended spin-singlet state in the regime of strong dot--cavity coupling. Engineering such extended quantum states presents a viable route for nonlocal spin coupling that is applicable for quantum information processing.
Source:	arXiv, 1503.2928
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