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arXiv · 1411.7065

Quantum manipulation of two-electron spin states in metastable double quantum dots

Benoit Bertrand·Hanno Flentje·Shintaro Takada·Michihisa Yamamoto·Seigo Tarucha·Arne Ludwig·Andreas D. Wieck·Christopher Bäuerle·Tristan Meunier
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Abstract

We studied experimentally the dynamics of the exchange interaction between two antiparallel electron spins in a so-called metastable double quantum dot where coupling to the electron reservoirs can be ignored. We demonstrate that the level of control of such a double dot is higher than in conventional double dots. In particular, it allows to couple coherently two electron spins in an efficient manner following a scheme initially proposed by Loss and DiVincenzo. The present study demonstrates that metastable quantum dots are a possible route to increase the number of coherently coupled quantum dots.

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Benoit Bertrand, Hanno Flentje, Shintaro Takada, Michihisa Yamamoto, Seigo Tarucha, Arne Ludwig, Andreas D. Wieck, Christopher Bäuerle, Tristan Meunier. 2014-11-25. Quantum manipulation of two-electron spin states in metastable double quantum dots. https://doi.org/10.1103/physrevlett.115.096801

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