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Article Dans Une Revue Science Année : 2007

An On-Demand Coherent Single Electron Source

Résumé

We report on the electron analog of the single photon gun. On demand single electron injection in a quantum conductor was obtained using a quantum dot connected to the conductor via a tunnel barrier. Electron emission is triggered by application of a potential step which compensates the dot charging energy. Depending on the barrier transparency the quantum emission time ranges from 0.1 to 10 nanoseconds. The single electron source should prove useful for the implementation of quantum bits in ballistic conductors. Additionally periodic sequences of single electron emission and absorption generate a quantized AC-current.
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Dates et versions

hal-00150473 , version 1 (30-05-2007)

Identifiants

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Gwendal Fève, Adrien Mahé, Jean-Marc Berroir, Takis Kontos, Bernard Plaçais, et al.. An On-Demand Coherent Single Electron Source. Science, 2007, 316, pp.1169. ⟨10.1126/science.1141243⟩. ⟨hal-00150473⟩
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