Quantum optics experiments with electrons

Datum

21.03.2018

Zeit

14:00 - 15:00

Sprecher

Prof. Gwendal Feve

Zugehörigkeit

University Pierre and Marie Curie, Laboratory Pierre Aigrain, Department of Physics - ENS, Paris

Sprache

en

Hauptthema

Materialien

Andere Themen

Materialien, Physik

Host

Christine Malbrich

Beschreibung

Abstract In ballistic quantum conductors at low temperatures, the motion of electrons is not hindered by collisions and the phase of the electronic wavefunction can be preserved on a few microns corresponding to the typical size of the conductor. Electronic propagation then bears strong similarities with the propagation of light: one can manipulate and study the coherence properties of electron beams in the electronic analog of quantum optics experiment. In particular, using metallic gates as electronic beam-splitters, electronic interferometers can be implemented. I will more specifically discuss the realization of the electronic analog of the Hong-Ou-Mandel interferometer where single electronic excitations emitted on demand collide on a beam-splitter. Two-electron interferences can then be used to reveal the coherence properties and picture the wavefunction of elementary electronic excitations propagating in a conductor.

Links

• Seminars at the IFW

Letztmalig verändert: 21.03.2018, 09:02:47