Coherent control of refractive index in far-detuned Λ systems

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Article discussing research on the coherent control of refractive index in far-detuned Λ systems.

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8 p.

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O'Brien, Chris; Anisimov, Petr M.; Rostovtsev, Yuri V. & Kocharovskaya, Olga December 15, 2011.

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Article discussing research on the coherent control of refractive index in far-detuned Λ systems.

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8 p.

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Copyright 2011 American Physical Society. The following article appeared in Physical Review Letters A, 84:6, http://link.aps.org/doi/10.1103/PhysRevA.84.063835

Abstract: Enhancement and control of the index of refraction in a mixture of two three-level atomic species that form a pair of far-detuned Λ schemes under two-photon resonance has been studied. We employ the density-matrix approach to properly take population relaxation into account and to describe the interaction of each Λ system with the electromagnetic fields. Both Λ systems are driven by a corresponding far-detuned coherent field at one atomic transition and are probed by the same weak field. In the dressed-state basis, it represents a superposition of effective two-level subsystems with the positions, widths, and amplitudes of the resonances controlled by the driving fields and allows for efficient control of the susceptibility of the total system; leading to refractive index (RI) enhancement with vanishing absorption in the absence of amplification. We analyze the experimental implementation of such a system in a cell of Rb atoms with a natural abundance of isotopes. An upper limit estimate of the RI enhancement is obtained.

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  • Physical Review A, 2012, College Park: American Physical Society

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  • Publication Title: Physical Review A
  • Volume: 84
  • Issue: 6
  • Pages: 8
  • Peer Reviewed: Yes

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UNT Scholarly Works

The Scholarly Works Collection is home to materials from the University of North Texas community's research, creative, and scholarly activities and serves as UNT's Open Access Repository. It brings together articles, papers, artwork, music, research data, reports, presentations, and other scholarly and creative products representing the expertise in our university community.** Access to some items in this collection may be restricted.**

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  • December 15, 2011

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  • Sept. 24, 2012, 12:38 p.m.

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  • May 12, 2014, 3:23 p.m.

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O'Brien, Chris; Anisimov, Petr M.; Rostovtsev, Yuri V. & Kocharovskaya, Olga. Coherent control of refractive index in far-detuned Λ systems, article, December 15, 2011; [College Park, Maryland]. (digital.library.unt.edu/ark:/67531/metadc103270/: accessed March 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.