Transport Spectroscopy of a Spin-Coherent Dot-Cavity System

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 atom...

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Published in:Physical review letters 2015-10, Vol.115 (16), p.166603-166603, Article 166603
Main Authors: Rössler, C, Oehri, D, Zilberberg, O, Blatter, G, Karalic, M, Pijnenburg, J, Hofmann, A, Ihn, T, Ensslin, K, Reichl, C, Wegscheider, W
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cited_by cdi_FETCH-LOGICAL-c311t-5dfd9a8526c5a2fab6722f3c25e3a8241ea9c50ec115385a05153e4060b435eb3
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container_end_page 166603
container_issue 16
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container_title Physical review letters
container_volume 115
creator Rössler, C
Oehri, D
Zilberberg, O
Blatter, G
Karalic, M
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Hofmann, A
Ihn, T
Ensslin, K
Reichl, C
Wegscheider, W
description 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.
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title Transport Spectroscopy of a Spin-Coherent Dot-Cavity System
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