title: Polarization qubit phase gate in driven atomic media.
abstract: We present here an all-optical scheme for the experimental realization of a quantum phase gate. It is based on the polarization degree of freedom of two traveling single-photon wave packets and exploits giant Kerr nonlinearities that can be attained in coherently driven ultracold atomic media.
authors.affiliation: INFM and Dipartimento di Fisica, Università di Camerino, I-62032 Camerino, Italy.
authors.forename: Carlo
authors.initials: C
authors.lastname: Ottaviani
authors.forename: David
authors.initials: D
authors.lastname: Vitali
authors.forename: Maurizio
authors.initials: M
authors.lastname: Artoni
authors.forename: Francesco
authors.initials: F
authors.lastname: Cataliotti
authors.forename: Paolo
authors.initials: P
authors.lastname: Tombesi