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Electromagnetically Induced Transparency in Media with Rydberg Excitons 1: Slow Light.

David Ziemkiewicz1

  • 1Institute of Mathematics and Physics, UTP University of Science and Technology, Al. Prof. S. Kaliskiego 7, 85-789 Bydgoszcz, Poland.

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|December 8, 2020
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Electromagnetically Induced Transparency (EIT) is achievable in Rydberg excitons within Cu2O crystals. This phenomenon allows for significant light pulse slowing, demonstrating potential for novel optical applications.

Keywords:
electromagnetically induced transparency

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Area of Science:

  • Quantum optics
  • Solid-state physics
  • Materials science

Background:

  • Electromagnetically Induced Transparency (EIT) is a quantum interference effect that modifies the optical properties of an atomic medium.
  • Rydberg excitons, highly excited states of electrons and holes in semiconductors, offer unique interactions for quantum phenomena.
  • Copper(I) oxide (Cu2O) is a semiconductor material with potential for exploring exciton dynamics.

Purpose of the Study:

  • To investigate the feasibility of realizing Electromagnetically Induced Transparency (EIT) in a medium composed of Rydberg excitons.
  • To identify suitable Rydberg exciton states within a Cu2O crystal for EIT.
  • To theoretically demonstrate the potential for significant light pulse slowing using this system.

Main Methods:

  • Theoretical calculations based on realistic and experimentally validated parameters.
  • Modeling of Rydberg exciton states in Cu2O.
  • Simulation of light-matter interaction to predict EIT conditions.

Main Results:

  • Demonstrated that EIT can be realized in Rydberg excitons in Cu2O.
  • Identified specific Rydberg exciton states suitable for achieving EIT.
  • Calculations indicate a large group index, leading to a predicted light pulse slowing factor of approximately 10^4.

Conclusions:

  • Rydberg excitons in Cu2O provide a viable platform for achieving Electromagnetically Induced Transparency (EIT).
  • The predicted light slowing effect has significant implications for optical signal processing and quantum information.
  • This work bridges quantum optics phenomena with solid-state semiconductor systems.