title: Polariton-generated intensity squeezing in semiconductor micropillars.
abstract: The generation of squeezed and entangled light fields is a crucial ingredient for the implementation of quantum information protocols. In this context, semiconductor materials offer a strong potential for the implementation of on-chip devices operating at the quantum level. Here we demonstrate a novel source of continuous variable squeezed light in pillar-shaped semiconductor microcavities in the strong coupling regime. Degenerate polariton four-wave mixing is obtained by exciting the pillar at normal incidence. We observe a bistable behaviour and we demonstrate the generation of squeezing near the turning point of the bistability curve. The confined pillar geometry allows for a larger amount of squeezing than planar microcavities due to the discrete energy levels protected from excess noise. By analysing the noise of the emitted light, we obtain a measured intensity squeezing of 20.3%, inferred to be 35.8% after corrections.
authors: Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure and CNRS, UPMC Case 74, 4 place Jussieu, 75252 Paris Cedex 05, France.
authors: T
authors: T
authors: Boulier
authors: Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
authors: M
authors: M
authors: Bamba
authors: 1] Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure and CNRS, UPMC Case 74, 4 place Jussieu, 75252 Paris Cedex 05, France [2] Laboratoire Photonique et Nanostructures, CNRS, Route de Nozay, 91460 Marcoussis, France.
authors: A
authors: A
authors: Amo
authors: Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure and CNRS, UPMC Case 74, 4 place Jussieu, 75252 Paris Cedex 05, France.
authors: C
authors: C
authors: Adrados
authors: Laboratoire Photonique et Nanostructures, CNRS, Route de Nozay, 91460 Marcoussis, France.
authors: A
authors: A
authors: Lemaitre
authors: Laboratoire Photonique et Nanostructures, CNRS, Route de Nozay, 91460 Marcoussis, France.
authors: E
authors: E
authors: Galopin
authors: Laboratoire Photonique et Nanostructures, CNRS, Route de Nozay, 91460 Marcoussis, France.
authors: I
authors: I
authors: Sagnes
authors: Laboratoire Photonique et Nanostructures, CNRS, Route de Nozay, 91460 Marcoussis, France.
authors: J
authors: J
authors: Bloch
authors: Laboratoire Matériaux et Phénomènes Quantique, Université Paris Diderot et CNRS, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, France.
authors: C
authors: C
authors: Ciuti
authors: Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure and CNRS, UPMC Case 74, 4 place Jussieu, 75252 Paris Cedex 05, France.
authors: E
authors: E
authors: Giacobino
authors: Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure and CNRS, UPMC Case 74, 4 place Jussieu, 75252 Paris Cedex 05, France.
authors: A
authors: A
authors: Bramati