title: Fabrication of a centimeter-long cavity on a nanofiber for cavity quantum electrodynamics.
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 values in the range of 200-400 can enable the "strong-coupling" regime of cavity QED, with high cooperativity of 10-20, for a single atom trapped 200 nm away from the fiber surface [Phys. Rev. A80, 053826 (2009)PLRAAN1050-294710.1103/PhysRevA.80.053826]. Such cavity modes can still maintain the transmission between 40%-60%, suggesting a one-pass intracavity transmission of 99.53%. Other cavity modes, which can enable cooperativity in the range of 3-10, show transmission over 60%-85% and are suitable for fiber-based single-photon sources and quantum nonlinear optics in the "Purcell" regime.
authors.forename: Jameesh
authors.initials: J
authors.lastname: Keloth
authors.forename: K P
authors.initials: KP
authors.lastname: Nayak
authors.forename: K
authors.initials: K
authors.lastname: Hakuta