A proposal for the implementation of a quantum phase gate in a five-level atomic medium

C. Ottaviani*, S. Rebić, G. Di Giuseppe, D. Vitali, P. Tombesi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The interaction of a five-level atomic system involving electromagnetically induced transparency with four light fields is investigated. Two different operating regimes are considered, semi-classical and quantized, where two light fields are treated as quantum. In the semi-classical regime, the dispersive properties of the scheme are analyzed in detail, and the conditions leading to group velocity matching for two of the light fields are identified. In the quantized regime, the two quantum fields undergo cross-phase modulation induced by electromagnetically induced transparency. Based on this, a recent proposal [C. Ottaviani et al., Phys. Rev. A 73, 010301 (R) (2006)] for a two-qubit quantum phase gate for traveling single-photon qubits is examined. An experimental scheme for verification of QPG operation is proposed.

Original languageEnglish
Pages (from-to)1491-1500
Number of pages10
JournalLaser Physics
Volume16
Issue number11
DOIs
Publication statusPublished - Nov 2006

Fingerprint Dive into the research topics of 'A proposal for the implementation of a quantum phase gate in a five-level atomic medium'. Together they form a unique fingerprint.

Cite this