Coherent Particle Transfer in an On-Demand Single-Electron Source

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dc.creatorKeeling, J.
dc.creatorShytov, A. V.
dc.creatorLevitov, L. S.
dc.date2008-04-27
dc.date2008-06-29
dc.date.accessioned2026-07-07T10:16:12Z
dc.date.available2026-07-07T10:16:12Z
dc.descriptionCoherent electron transfer from a localized state trapped in a quantum dot into a ballistic conductor, taking place in on-demand electron sources, in general may result in excitation of particle-hole pairs. We consider a simple model for these effects, involving a resonance level with time-dependent energy, and derive Floquet scattering matrix describing inelastic transitions of particles in the Fermi sea. We find that, as the resonance level is driven through the Fermi level, particle transfer may take place completely without particle-hole excitations for certain driving protocols. In particular, such noiseless transfer occurs when the level moves with constant rapidity, its energy changing linearly with time. A detection scheme for studying the coherence of particle transfer is proposed.
dc.description5 pages, 3 figures. Updated introduction, Fig. 1, and references
dc.identifierhttps://arxiv.org/abs/0804.4281
dc.identifierhttp://arxiv.org/abs/0804.4281
dc.identifierPhys. Rev. Lett. 101, 196404 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.196404
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173422
dc.subjectMesoscale and Nanoscale Physics
dc.titleCoherent Particle Transfer in an On-Demand Single-Electron Source
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