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Four-state N-atom as a simple theoretical model for electromagnetically induced absorption

1999/04/16 by A. V. Taichenachev, A. V. Taǐchenachev, A. M. Tumaikin +5
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Mechanical and Optical Resonators #Quantum Physics (quant-ph) #Quantum optics and atomic interactions #Spectroscopy and Quantum Chemical Studies #physics.atom-ph #quant-ph

paper · pdf · doi:10.48550/arxiv.physics/9904033

RevTeX 4 pages, 3 ps figures

arxiv created 1999/04/16 · openalex publication_date 1999/04/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A simple theoretical model describing the positive sign of subnatural-width absorption resonances in the recent experiment of Akulshin and co-workers (Phys. Rev. A, \bf 57, 2996 (1998)) is proposed. An analytical expression for the linear response to the weak probe field is found in the low-saturation limit with respect to the control field. It is shown that the positive sign of subnatural resonance is caused by the spontaneous transfer of the light-induced coherence from the excited level to the ground one.

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