Goban, A. Hung, C. -L. Yu, S. -P. Hood, J. D. Muniz, J. A. Lee, J. H. Martin, M. J. McClung, A. C. Choi, K. S. Chang, D. E. Painter, O. Kimble, H. J. 2024-01-20T10:01:19Z 2024-01-20T10:01:19Z 2021-09-04 2014-05 2041-1723 https://pubs.kist.re.kr/handle/201004/126857 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) over bar = 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 Gamma(1D)/Gamma' similar or equal to (0.32 +/- 0.08), where Gamma(1D) is the rate of emission into the guided mode and Gamma' is the decay rate into all other channels. Gamma(1D)/Gamma' is unprecedented in all current atom-photon interfaces. English NATURE PUBLISHING GROUP SINGLE TRAPPED ATOM SPONTANEOUS EMISSION STATE Atom-light interactions in photonic crystals Article 10.1038/ncomms4808 1 NATURE COMMUNICATIONS, v.5 NATURE COMMUNICATIONS 5 scie scopus 000337372200019 2-s2.0-84900027535 Multidisciplinary Sciences Science & Technology - Other Topics Article SINGLE TRAPPED ATOM SPONTANEOUS EMISSION STATE Physical sciences Atomic and molecular physics Optical physics