Realization of a gain with electromagnetically induced transparency system using non-degenerate Zeeman sublevels in 87Rb

Minchuan Zhou*, Zifan Zhou, Selim M Shahriar

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Previously, we had proposed an optically-pumped five-level Gain EIT (GEIT) system, which has a transparency dip superimposed on a gain profile and exhibits a negative dispersion suitable for the white-light-cavity signal-recycling (WLC-SR) scheme of the interferometric gravitational wave detector (Zhou et al., 2015). Using this system as the negative dispersion medium (NDM) in the WLC-SR, we get an enhancement in the quantum noise (QN) limited sensitivity-bandwidth product by a factor of ∼18. Here, we show how to realize this GEIT system in a realistic platform, using non-degenerate Zeeman sublevels in cold Rb atoms, employing anomalous dispersion at 795 nm. Using the Caves model for a phase insensitive linear amplifier, we show that an enhancement of the sensitivity-bandwidth product by a factor of ∼17 is possible for potentially realizable experimental parameters. While the current LIGO apparatus uses light at 1064 nm, a future embodiment thereof may operate at a wavelength that is consistent with the wavelength considered here.

Original languageEnglish (US)
Pages (from-to)382-388
Number of pages7
JournalOptics Communications
Volume402
DOIs
StatePublished - Nov 1 2017

Keywords

  • Gain with electromagnetically induced transparency
  • Gravitational wave detection
  • Negative dispersion
  • Quantum noise
  • Zeeman sublevels

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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