Levitons for electron quantum optics

D S Glattli (1) , Preden S Roulleau (1)

1 SPEC - UMR3680 - Service de physique de l'état condensé

Single electron sources enable electron quantum optics experiments where single electrons emitted in a ballistic electronic interferometer plays the role of a single photons emitted in an optical medium in Quantum Optics. A qualitative step has been made with the recent generation of single charge levitons obtained by applying Lorentzian voltage pulse on the contact of the quantum conductor. Simple to realize and operate, the source emits electrons in the form of striking minimal excitation states called levitons. We review the striking properties of levitons and their possible applications in quantum physics to electron interferometry and entanglement. Schematic generation of time-resolved single charges calledlevitons using Lorentzian voltage pulses applied on a contact.A quantum point contact is used to partition the levitons forfurther analysis. Injecting levitons on opposite contacts with adelay $\tau$ enables us to probe electronic like Hong–Ou–Mandelcorrelations.

Mots clés: quantum shot noise; levitons; Quantum information and quantum mechanics; single electron source

Domaines: Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]; Physique Quantique [quant-ph]

D S Glattli, Preden S Roulleau. Levitons for electron quantum optics. physica status solidi (b), 2017, 254 (3), pp.1600650. ⟨10.1002/pssb.201600650⟩. ⟨hal-01374502⟩