TY - JOUR
T1 - Cross-Kerr interaction in a four-level atomic system
AU - Sinclair, Gary F.
AU - Korolkova, Natalia
PY - 2007/9
Y1 - 2007/9
N2 - We derive the form of the cross-Kerr interaction in a four-level atomic system in an 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.
AB - We derive the form of the cross-Kerr interaction in a four-level atomic system in an 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.
UR - http://www.scopus.com/inward/record.url?scp=34548751173&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.76.033803
DO - 10.1103/PhysRevA.76.033803
M3 - Article
SN - 1050-2947
VL - 76
SP - 033803
JO - Physical Review. A, Atomic, molecular, and optical physics
JF - Physical Review. A, Atomic, molecular, and optical physics
ER -