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arXiv:1102.5010 · Nature Photonics

Cavity electromagnetically induced transparency and all-optical switching using ion Coulomb crystals

Magnus Albert, Aurélien Dantan, Michael Drewsen

Published Sep 4, 2011• 122 citations
arXivHTMLPDF
DOI
10.1038/nphoton.2011.214

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All-cavity electromagnetically induced transparency and optical switching: Semiclassical theory

Aurélien Dantan, Magnus Albert, Michael Drewsen

The transmission of a probe field experiencing electromagnetically induced transparency and optical switching in an atomic medium enclosed in an optical cavity is investigated. Using a semiclassical input-output theory for the interaction between an ensemble of four-level atoms and three optical cavity fields coupled to the same spatial cavity mode, we derive the steady-state transmission spectra of the probe field and discuss the dynamics of the intracavity field buildup. The analytical and numerical results are in good agreement with recent experiments with ion Coulomb crystals [M. Albert et al., Nature Photon. 5, 633 (2011)].

arXiv:1110.5299•Physical Review A•Jan 26, 2012•30 citations
We report on the first observation of cavity EIT with ion Coulomb crystals (40Ca+ions) enclosed in a moderately high-finesse linear cavity, in a novel configuration where both the probe and the control field are injected into the cavity. The weak probe field (single photon level), and the more intense control field originate from the same laser and are both tuned to the same atomic transition (3d2D3/2-4p2P1/2), but with opposite circular polarizations to address separate Zeeman sub-states of the 3d2D3/2level.
We experimentally investigate the transient dynamics of an optical cavity field interacting with large ion Coulomb crystals in a situation of electromagnetically induced transparency (EIT). EIT is achieved by injecting a probe field at the single photon level and a more intense control field with opposite circular polarization into the same mode of an optical cavity to couple Zeeman substates of a metastable level in 40Ca+ ions. The EIT interaction dynamics are investigated both in the frequency-domain – by measuring the probe field steady state reflectivity spectrum – and in the time-domain – by measuring the progressive buildup of transparency. The experimental results are observed to be in excellent agreement with theoretical predictions taking into account the inhomogeneity of the control field in the interaction volume, and confirm the high degree of control on light-matter interaction that can be achieved with ion Coulomb crystals in optical cavities.
The transmission of a probe field experiencing electromagnetically induced transparency and optical switching in an atomic medium enclosed in an optical cavity is investigated. Using a semiclassical input-output theory for the interaction between an ensemble of four-level atoms and three optical cavity fields coupled to the same spatial cavity mode, we derive the steady-state transmission spectra of the probe field and discuss the dynamics of the intracavity field buildup. The analytical and numerical results are in good agreement with recent experiments with ion Coulomb crystals [M. Albert et al., Nature Photon. 5, 633 (2011)].