Polarization phase gate with a tripod atomic system
Journal Article
·
· Physical Review. A
- INFM and Dipartimento di Fisica, Universita di Camerino, I-62032 Camerino (Italy)
- INFM and Dipartimento di Chimica e Fisica dei Materiali, Universita di Brescia, I-25133 Brescia (Italy)
- European Laboratory for Non-linear Spectroscopy, via N. Carrara, I-50019 Sesto Fiorentino (Italy)
- Departament de Fisica, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Spain)
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.
- OSTI ID:
- 20646022
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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