title: Atom-light interactions in photonic crystals.
abstract: The integration of nanophotonics and atomic physics has been a long-sought goal that would open new frontiers for optical physics, including novel quantum transport and many-body phenomena with photon-mediated atomic interactions. Reaching this goal requires surmounting diverse challenges in nanofabrication and atomic manipulation. Here we report the development of a novel integrated optical circuit with a photonic crystal capable of both localizing and interfacing atoms with guided photons. Optical bands of a photonic crystal waveguide are aligned with selected atomic transitions. From reflection spectra measured with average atom number N=1.1+/-0.4, we infer that atoms are localized within the waveguide by optical dipole forces. The fraction of single-atom radiative decay into the waveguide is Γ1D/Γ'≃(0.32±0.08), where Γ1D is the rate of emission into the guided mode and Γ' is the decay rate into all other channels. Γ1D/Γ' is unprecedented in all current atom-photon interfaces.
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA [3].
authors.forename: A
authors.initials: A
authors.lastname: Goban
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA [3].
authors.forename: C-L
authors.initials: CL
authors.lastname: Hung
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA [3].
authors.forename: S-P
authors.initials: SP
authors.lastname: Yu
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA [3].
authors.forename: J D
authors.initials: JD
authors.lastname: Hood
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA [3].
authors.forename: J A
authors.initials: JA
authors.lastname: Muniz
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: J H
authors.initials: JH
authors.lastname: Lee
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Martin
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: A C
authors.initials: AC
authors.lastname: McClung
authors.affiliation: Spin Convergence Research Center 39-1, Korea Institute of Science and Technology, Seoul 136-791, Korea.
authors.forename: K S
authors.initials: KS
authors.lastname: Choi
authors.affiliation: ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain.
authors.forename: D E
authors.initials: DE
authors.lastname: Chang
authors.affiliation: 1] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA [2] Thomas J. Watson, Sr., Laboratory of Applied Physics 128-95, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: O
authors.initials: O
authors.lastname: Painter
authors.affiliation: 1] Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA [2] Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: H J
authors.initials: HJ
authors.lastname: Kimble