Cascaded optical transparency in multimode-cavity optomechanical systems

Linran Fan, King Y. Fong, Menno Poot and Hong X. Tang ()
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Linran Fan: Yale University
King Y. Fong: Yale University
Menno Poot: Yale University
Hong X. Tang: Yale University

Nature Communications, 2015, vol. 6, issue 1, 1-6

Abstract: Abstract Electromagnetically induced transparency has great theoretical and experimental importance in many areas of physics, such as atomic physics, quantum optics and, more recent, cavity optomechanics. Optical delay is the most prominent feature of electromagnetically induced transparency, and in cavity optomechanics, the optical delay is limited by the mechanical dissipation rate of sideband-resolved mechanical modes. Here we demonstrate a cascaded optical transparency scheme by leveraging the parametric phonon–phonon coupling in a multimode optomechanical system, where a low damping mechanical mode in the unresolved-sideband regime is made to couple to an intermediate, high-frequency mechanical mode in the resolved-sideband regime of an optical cavity. Extended optical delay and higher transmission as well as optical advancing are demonstrated. These results provide a route to realize ultra-long optical delay, indicating a significant step towards integrated classical and quantum information storage devices.

Date: 2015
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DOI: 10.1038/ncomms6850

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