title: Large Bragg Reflection from One-Dimensional Chains of Trapped Atoms Near a Nanoscale Waveguide.
abstract: We report experimental observations of a large Bragg reflection from arrays of cold atoms trapped near a one-dimensional nanoscale waveguide. By using an optical lattice in the evanescent field surrounding a nanofiber with a period nearly commensurate with the resonant wavelength, we observe a reflectance of up to 75% for the guided mode. Each atom behaves as a partially reflecting mirror and an ordered chain of about 2000 atoms is sufficient to realize an efficient Bragg mirror. Measurements of the reflection spectra as a function of the lattice period and the probe polarization are reported. The latter shows the effect of the chiral character of nanoscale waveguides on this reflection. The ability to control photon transport in 1D waveguides coupled to spin systems would enable novel quantum network capabilities and the study of many-body effects emerging from long-range interactions.
authors.affiliation: Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 Place Jussieu, 75005 Paris, France.
authors.forename: Neil V
authors.initials: NV
authors.lastname: Corzo
authors.affiliation: Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 Place Jussieu, 75005 Paris, France.
authors.forename: Baptiste
authors.initials: B
authors.lastname: Gouraud
authors.affiliation: Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 Place Jussieu, 75005 Paris, France.
authors.forename: Aveek
authors.initials: A
authors.lastname: Chandra
authors.affiliation: Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: Akihisa
authors.initials: A
authors.lastname: Goban
authors.affiliation: Information Technologies, Mechanics and Optics University, 199034 St. Petersburg, Russia.|Russian Quantum Center, 143025 Skolkovo, Moscow Region, Russia.
authors.forename: Alexandra S
authors.initials: AS
authors.lastname: Sheremet
authors.affiliation: Department of Theoretical Physics, St. Petersburg State Polytechnic University, 195251 St. Petersburg, Russia.
authors.forename: Dmitriy V
authors.initials: DV
authors.lastname: Kupriyanov
authors.affiliation: Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 Place Jussieu, 75005 Paris, France.
authors.forename: Julien
authors.initials: J
authors.lastname: Laurat