Self-aligned charge read-out for InAs nanowire quantum dots.

Abstract

A highly sensitive charge detector is realized for a quantum dot in an InAs nanowire. We have developed a self-aligned etching process to fabricate in a single step a quantum point contact in a two-dimensional electron gas and a quantum dot in an InAs nanowire. The quantum dot is strongly coupled to the underlying point contact that is used as a charge… (More)
DOI: 10.1021/nl072522j

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