Enhanced Cross-Phase Modulation Based on a Double Electromagnetically Induced Transparency in a Four-Level Tripod Atomic System

Journal Article · Fri Aug 15 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.073602· OSTI ID:21134134

Shujing, Li; Xudong, Yang; Xuemin, Cao; Chunhong, Zhang; Changde, Xie; 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 report experimental observations on the simultaneous electromagnetically induced transparency (EIT) effects for probe and trigger fields (double EIT) as well as the enhanced cross-phase modulation (XPM) between the two fields in a four-level tripod EIT system of the D1 line of {sup 87}Rb atoms. The XPM coefficients (larger than 2x10{sup -5} cm{sup 2}/W) and the accompanying transmissions (higher than 60%) are measured at a slight detuning of the probe field from the exact EIT-resonance condition. The system and enhanced cross-Kerr nonlinearities presented here can be applied to quantum information processes.

• OSTI ID: 21134134
• Journal Information: Physical Review Letters, Vol. 101, Issue 7; Other Information: DOI: 10.1103/PhysRevLett.101.073602; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
INFORMATION THEORY
MODULATION
NONLINEAR PROBLEMS
QUANTUM INFORMATION
QUANTUM MECHANICS
RUBIDIUM 87