Enhanced cross-Kerr nonlinearity via electromagnetically induced transparency in a four-level tripod atomic system

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Journal of the Optical Society of America. Part B, Optical Physics

DOI:https://doi.org/10.1364/JOSAB.26.001423· OSTI ID:22046824

Xudong, Yang; Shujing, Li; Chunhong, Zhang; Hai, Wang ^[1]

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1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006 (China)

We investigate, both theoretically and experimentally, the cross-Kerr nonlinearity generated in a four-level tripod system in the {sup 87}Rb D1 line. The system exhibits simultaneous electromagnetically induced transparency (EIT) windows for two weak (probe and trigger) fields and the enhanced cross-Kerr nonlinearity by EIT. The cross-Kerr nonlinear phase shifts for probe (trigger) field are measured at several different intensities of trigger (probe) field. The results show that large cross-phase modulation (XPM) coefficients can be achieved at low light intensities.

• OSTI ID: 22046824
• Journal Information: Journal of the Optical Society of America. Part B, Optical Physics, Vol. 26, Issue 7; Other Information: (c) 2009 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ENERGY LEVELS
KERR EFFECT
MODULATION
NONLINEAR PROBLEMS
OPACITY
OPTICS
PHASE SHIFT
PHOTON-ATOM COLLISIONS
RUBIDIUM 87
VISIBLE RADIATION