Quantum state-controlled directional spontaneous emission of photons into a nanophotonic waveguide
Nanophotonics
Waveguide
Quantum imaging
Superradiance
Light emission
DOI:
10.1038/ncomms6713
Publication Date:
2014-12-12T12:51:51Z
AUTHORS (5)
ABSTRACT
Abstract The spin of light in subwavelength-diameter waveguides can be orthogonal to the propagation direction photons because strong transverse confinement. This changes sign when is reversed. Using this effect, we demonstrate directional spontaneous emission by laser-trapped caesium atoms into an optical nanofibre and control their excited state atomic emitters. In particular, tune counter-propagating guided modes from symmetric strongly asymmetric, where more than "Equation missing"<!-- image only, no MathML or LaTex -->% power launched one other direction. We expect our results have important implications for research quantum nanophotonics implementations integrated signal processing regime.
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