Abstract
Micro- and nanophotonic systems constitute a novel and highly advantageous experimental approach for the coupling of light and matter. The strong evanescent field of these structures allows one to efficiently interface optical emitters like neutral atoms and opens up the way towards fiber-integrated quantum devices. In our experiment we investigate the strong interaction between single 85Rb atoms and light in a bottle microresonator [1], a novel type of whispering-gallery-mode (WGM) microresonator [see Fig. 1(a)]. These resonators confine light by continuous total internal reflection and offer the advantage of very long photon lifetimes in conjunction with near lossless in- and out-coupling of light via tapered fiber couplers. In addition, we recently showed that the longitudinal polarization component of their evanescent field results in an inherent link between the local polarization of the light and its propagation direction. This fundamentally alters the physics of light-matter interaction and results in a new class of photonic devices that employ a chiral interaction of light and matter [2].
© 2015 IEEE
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