Cold Atom Nanophotonics Group

Chen-Lung Hung

Tzu-Han Chang, Brian D. Fields, May E. Kim +2 more

Xinchao Zhou, Tzu-Han Chang, Hikaru Tamura +1 more

Interfacing cold atoms with nanophotonic waveguides and resonators promises stronger atom-light interactions and leads to new paradigms for quantum optics. Here, we demonstrate coupling single atoms to a nanophotonic whispering-gallery-mode resonator using two different methods. The first one is an optical guiding technique that makes use of diffracted light from a nanophotonic waveguide to direct cold atoms to the evanescent region of the resonator. The second one is an optical conveyor-belt consisting of a moving optical lattice for controlled delivery of trapped atoms. Our demonstration enables new applications with scalable light-matter interface based on cold atoms coupled to nanophotonic circuits.

Adèle Hilico, Simon Bernon, Maxime Bellouvet +5 more

Daniel Hümmer, Philipp Schneeweiß, Arno Rauschenbeutel +1 more

A theoretical analysis identifies mechanical waveguide modes most responsible for heating atoms in nanophotonic cold-atom traps, which could lead to vastly improved atomic control in the next generation of devices.

J.-B. Béguin, A. P. Burgers, Xingsheng Luan +3 more

We combine nanophotonics and cold atom research in a new apparatus enabling the delivery of single-atom tweezer arrays in the vicinity of photonic crystal waveguides.