Engineered atom-light interactions in 1D photonic crystals
ORAL
Abstract
Nano- and microscale optical systems offer efficient and scalable quantum interfaces through enhanced atom-field coupling in both resonators and continuous waveguides. Beyond these conventional topologies, new opportunities emerge from the integration of ultracold atomic systems with nanoscale photonic crystals. One-dimensional photonic crystal waveguides can be engineered for both stable trapping configurations and strong atom-photon interactions,\footnote{C.-L. Hung, \textit{et al.}, New J. Phys. \textbf{15}, 083026 (2013).} enabling novel cavity QED and quantum many-body systems,\footnote{D. E. Chang \textit{et al.}, New J. Phys. \textbf{14}(6), 063003 (2012).} as well as distributed quantum networks. We present the experimental realization of such a nanophotonic quantum interface based on a nanoscale photonic crystal waveguide, demonstrating a fractional waveguide coupling of $\Gamma_{1D}/\Gamma'$ of $0.32\pm 0.08$, where $\Gamma_{1D}$ ($\Gamma'$) is the atomic emission rate into the guided (all other) mode(s).\footnote{A. Goban et al., arXiv:1312.3446 (2013).} We also discuss progress towards intra-waveguide trapping of ultracold Cs.
*This work was supported by the IQIM, an NSF Physics Frontiers Center with support from the Moore Foundation, the DARPA ORCHID program, the AFOSR QuMPASS MURI, the DoD NSSEFF program, NSF, and the Kavli Nanoscience Institute (KNI) at Caltech.
–