Entangled Two-Photon Wave Packet in a Dispersive Medium

Alejandra Valencia; Maria V. Chekhova; Alexei Trifonov; Yanhua Shih

doi:10.1103/PhysRevLett.88.183601

Entangled Two-Photon Wave Packet in a Dispersive Medium

Alejandra Valencia, Maria V. Chekhova, Alexei Trifonov, and Yanhua Shih

Phys. Rev. Lett. 88, 183601 – Published 17 April 2002

Abstract

We report an experimental study of group-velocity dispersion effect on an entangled two-photon wave packet, generated via spontaneous parametric down-conversion and propagating through a dispersive medium. Even in the case of using cw laser beam for pump, the biphoton wave packet and the second-order correlation function spread significantly. The study and understanding of this phenomenon is of great importance for quantum information applications, such as quantum communication and distant clock synchronization.

Received 22 February 2002

DOI:https://doi.org/10.1103/PhysRevLett.88.183601

Authors & Affiliations

Alejandra Valencia, Maria V. Chekhova^*, Alexei Trifonov^†, and Yanhua Shih

Department of Physics, University of Maryland, Baltimore County, Baltimore, Maryland 21250

^*Permanent address: Department of Physics, Moscow State University, Moscow, Russia.
^†Permanent address: MagiQ Technologies Inc., 11 Ward Street Suite 300, Somerville, MA 02143. Also affiliated with A. F. Ioffe Physical Technical Institute RAS, 26 Polytekhnich-eskaja, 194021 St. Petersburg, Russia.