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Enhanced optomechanically induced transparency via atomic ensemble in optomechanical system.

Tesfay Gebremariam Tesfahannes1

  • 1Department of Physics, Arba Minch University, Arba Minch, 21 Ethiopia.

Quantum Information Processing
|March 24, 2021
PubMed
Summary

We explore optomechanically induced transparency in atomic ensembles within optical cavities. Increasing atom numbers and coupling enhances transparency windows, offering potential for light pulse manipulation.

Keywords:
Atomic ensembleInput–output relationOptomechanical systemOptomechanically induced transparencyQuantum Langevin equation

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Area of Science:

  • Quantum Optics
  • Cavity Optomechanics
  • Atomic Physics

Background:

  • Optomechanically induced transparency (OMIT) is a quantum interference effect.
  • Cavity optomechanical systems couple light and mechanical motion within an optical cavity.
  • Atomic ensembles in optical cavities are crucial for quantum information processing.

Purpose of the Study:

  • Investigate OMIT phenomena in a cavity optomechanical system with a two-level atomic ensemble.
  • Analyze the influence of coupling fields, atomic decay rate, and atom number on OMIT.
  • Explore potential applications in light pulse manipulation.

Main Methods:

  • Theoretical modeling of a cavity optomechanical system.
  • Simulation of system response under varying driving conditions (probe and coupling fields).
  • Analysis of transparency window characteristics (width and depth) as a function of system parameters.

Main Results:

  • OMIT phenomena observed, exhibiting a transparency dip.
  • Transparency window width increases with coupling constant and atom number.
  • Transparency window width decreases with increasing atomic decay rate.
  • Enhanced transparency depth observed with a larger number of atoms.

Conclusions:

  • The number of atoms, coupling constant, and atomic decay rate significantly influence OMIT.
  • Larger atom numbers lead to wider and deeper transparency windows.
  • Potential applications include slowing and on-chip storage of light pulses using micro-fabricated optomechanical arrays.