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Robust charge-based qubit encoding

Oi, D K L and Schirmer, S G and Greentree, A D and Stace, T M (2005) Robust charge-based qubit encoding. Physical Review B, 72 (7). -. ISSN 1098-0121

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Abstract

We propose a simple encoding of charge-based quantum dot qubits which protects against fluctuating electric fields by charge symmetry of the logical states. We analyze the reduction of coupling to noise due to nearby charge traps and present single qubit gates. The relative advantage of the encoding increases with lower charge trap density.