Cross-Kerr interaction in a four-level atomic system
| Autor: | Sinclair, Gary F., Korolkova, Natalia |
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| Rok vydání: | 2007 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.76.033803 |
| Popis: | We derive the form of the cross-Kerr interaction in a four-level atomic system in the N-configuration. We use time-independent perturbation theory to calculate the eigenenergies and eigenstates of the Schrodinger equation for the system. The system is considered as a perturbation of a Raman resonant three-level lambda scheme for which exact solutions are known. We show that within the strong control field limit the cross-Kerr interaction can arise between two weak probe fields. The strength of this nonlinear coupling is several orders of magnitude larger than that achievable using optical fibres. Comment: 5 pages, resubmitted to Physical Review A with clarified style and correction to Fig 1 |
| Databáze: | arXiv |
| Externí odkaz: |
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