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Thomas Pohl

Blockade-induced resonant enhancement of the optical nonlinearity in a Rydberg medium

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  • Annika Tebben, Heidelberg Univ, Ruprecht Karls University Heidelberg, Phys Chem Inst, Theoret Chem
  • ,
  • Clement Hainaut, Heidelberg Univ, Ruprecht Karls University Heidelberg, Phys Chem Inst, Theoret Chem
  • ,
  • Valentin Walther
  • ,
  • Yong-Chang Zhang, Aarhus Univ, Aarhus University, SAC, Dept Phys & Astron
  • ,
  • Gerhard Zuern, Heidelberg Univ, Ruprecht Karls University Heidelberg, Phys Chem Inst, Theoret Chem
  • ,
  • Thomas Pohl
  • Matthias Weidemueller, Univ Sci & Technol China, Chinese Academy of Sciences, University of Science & Technology of China, Synerget Innovat Ctr Quantum Informat & Quantum P, Shanghai Branch

We predict a resonant enhancement of the nonlinear optical response of an interacting Rydberg gas under conditions of electromagnetically induced transparency. The enhancement originates from a two-photon process which resonantly couples electronic states of a pair of atoms dressed by a strong control field. We calculate the optical response for the three-level system by explicitly including the dynamics of the intermediate state. We find an analytical expression for the third-order susceptibility for a weak classical probe field. The nonlinear absorption displays the strongest resonant behavior on two-photon resonance where the detuning of the probe field equals the Rabi frequency of the control field. The nonlinear dispersion of the medium exhibits various spatial shapes depending on the interaction strength. Based on the developed model, we propose a realistic experimental scenario to observe the resonance by performing transmission measurements.

Original languageEnglish
Article number063812
JournalPhysical Review A
Volume100
Issue6
Number of pages7
ISSN2469-9926
DOIs
Publication statusPublished - 2019

    Research areas

  • QUANTUM, PHOTONS

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