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Article Dans Une Revue Physica E: Low-dimensional Systems and Nanostructures Année : 2008

Realization of a time-controlled sub nanosecond single electron source for ballistic qubits

Résumé

We report on the realization of a single electron source similar to single photon sources in optics providing an important brick for the implementation of flying quantum bits in ballistic conductors. On demand single electron injection is obtained using a quantum dot connected to the conductor via a tunnel barrier of variable transmission (quantum point contact). Electron emission is triggered by a sudden change of the dot potential which brings a single energy level above the Fermi energy in the conductor. A single charge is emitted on an average time ranging from 100 ps to 10 ns ultimately determined by the barrier transparency and the dot charging energy.

Dates et versions

hal-00272226 , version 1 (11-04-2008)

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Gwendal Fève, Adrien Mahé, Jean-Marc Berroir, Takis Kontos, Bernard Plaçais, et al.. Realization of a time-controlled sub nanosecond single electron source for ballistic qubits. Physica E: Low-dimensional Systems and Nanostructures, 2008, 40, pp.954. ⟨10.1016/j.physe.2007.09.183⟩. ⟨hal-00272226⟩
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