Polarization phase gate with a tripod atomic system -: art. no. 032317
Year: 2004
Authors: Rebic S., Vitali D., Ottaviani C., Tombesi P., Artoni M., Cataliotti F.S., Corbalbn R.
Autors Affiliation: iv Camerino, INFM, I-62032 Camerino, Italy; Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy; Univ Brescia, INFM, I-25133 Brescia, Italy; Univ Brescia, Dipartimento Chim Fis Mat, I-25133 Brescia, Italy; European Lab Nonlinear Spect, I-50019 Sesto Fiorentino, Italy; Univ Catania, Dipartmento Fis, I-95124 Catania, Italy; Univ Catania, INFM, I-95124 Catania, Italy; Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain.
Abstract: We analyze the nonlinear optical response of a four-level atomic system driven into a tripod configuration. The large cross-Kerr nonlinearities that occur in such a system are shown to produce nonlinear phase shifts of order pi. Such a substantial shift may be observed in a cold atomic gas in a magneto-optical trap where it could be feasibly exploited towards the realization of a polarization quantum phase gate. The experimental feasibility of such a gate is here examined in detail.
Journal/Review: PHYSICAL REVIEW A
Volume: 70 (3) Pages from: 32317-1 to: 32317-8
More Information: We acknowledge enlightening discussions with P. Grangier, F. T. Arecchi, and M. Inguscio. We greatly acknowledge support from the MURST ( Actione Integrada Italia-Spagna ), the MIUR (PRIN 2001 Quantum Communications with Slow Light ), and by MCyT and FEDER (Project No. BFM2002-04369-C04-02).KeyWords: Strongly Interacting Photons; Nonlinear Optics; Quantum; Transparency; LightDOI: 10.1103/PhysRevA.70.032317Citations: 158data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-20References taken from IsiWeb of Knowledge: (subscribers only)