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arXiv:0905.0805 · Physical Review Letters

Correlated Coherent Oscillations in Coupled Semiconductor Charge Qubits

Gou Shinkai, T. Hayashi, Takeshi Ota, T. Fujisawa

Published Jul 28, 2009• 167 citations
arXivHTMLPDF

Abstract

We study coherent dynamics of two spatially separated electrons in a coupled semiconductor double quantum dot (DQD). Coherent oscillations in one DQD are strongly influenced by electronic states of the other DQD, or the two electrons simultaneously tunnel in a correlated manner. The observed coherent oscillations are interpreted as various two-qubit operations. The results encourage searching quantum entanglement in electronic devices.

DOI
10.1103/physrevlett.103.056802

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