title: Distillation of the two-mode squeezed state.
abstract: We experimentally demonstrate entanglement distillation of the two-mode squeezed state obtained by parametric down-conversion. Applying the photon annihilation operator to both modes, we raise the fraction of the photon-pair component in the state, resulting in the increase of both squeezing and entanglement by about 50%. Because of the low amount of initial squeezing, the distilled state does not experience significant loss of Gaussian character.
authors.affiliation: Russian Quantum Centre, 100 Novaya Street, Skolkovo, Moscow 143025, Russia.
authors.forename: Yury
authors.initials: Y
authors.lastname: Kurochkin
authors.affiliation: Institute for Quantum Science and Technology, University of Calgary, Alberta T2N1N4, Canada.
authors.forename: Adarsh S
authors.initials: AS
authors.lastname: Prasad
authors.affiliation: Russian Quantum Centre, 100 Novaya Street, Skolkovo, Moscow 143025, Russia and Institute for Quantum Science and Technology, University of Calgary, Alberta T2N1N4, Canada.
authors.forename: A I
authors.initials: AI
authors.lastname: Lvovsky