Toolbox for continuous-variable entanglement production and measurement using spontaneous parametric down-conversion

G. Boucher, T. Douce, D. Bresteau, S. P. Walborn, A. Keller, T. Coudreau, S. Ducci, and P. Milman

Phys. Rev. A 92, 023804 – Published 4 August 2015

Abstract

We provide a toolbox for continuous-variable quantum-state engineering and characterization of biphoton states produced by spontaneous parametric down-conversion in a transverse pump configuration. We show that the control of the pump beam's incidence spot and angle corresponds to phase-space displacements of conjugate collective continuous variables of the biphoton. In particular, we illustrate with numerical simulations on a semiconductor device how this technique can be used to engineer and characterize arbitrary states of the frequency and time degrees of freedom.

Received 9 April 2015

DOI:https://doi.org/10.1103/PhysRevA.92.023804

Authors & Affiliations

G. Boucher^1,*, T. Douce¹, D. Bresteau^1,†, S. P. Walborn², A. Keller³, T. Coudreau¹, S. Ducci¹, and P. Milman¹

¹Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot, CNRS UMR 7162, 75013, Paris, France
²Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil
³Institut de Sciences Moléculaires d'Orsay (CNRS), Université Paris-Sud 11, Bâtiment 350–Campus d'Orsay, 91405 Orsay Cedex, France

^*guillaume.boucher@univ-paris-diderot.fr
^†Current adress: Laboratoire Aimé Cotton, Bâtiment 505–Campus d'Orsay, Université Paris-Sud 11, 91405 Orsay Cedex, France.

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Vol. 92, Iss. 2 — August 2015

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