Fabrication of a centimeter-long cavity on a nanofiber for cavity QED

Abstract

We report the fabrication of a 1.2 cm long cavity directly on a nanofiber using femtosecond laser ablation. The cavity modes with finesse value in the range 200-400 can still maintain the transmission between 40-60%, which can enable "strong-coupling" regime of cavity QED for a single atom trapped 200 nm away from the fiber surface. For such cavity modes, we estimate the one-pass intra-cavity transmission to be 99.53%. Other cavity modes, which can enable high cooperativity in the range 3-10, show transmission over 60-85% and are suitable for fiber-based single photon sources and quantum nonlinear optics in the "Purcell" regime.

5 pages, 4 figures

References in corpus (5)

• The Quantum Internet
• Cavity-based quantum networks with single atoms and optical photons
• Nanophotonic quantum phase switch with a single atom
• Cavity QED on a nanofiber using a composite photonic crystal cavity
• Strong coupling between a trapped single atom and an all-fiber cavity

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