Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Towards Programmable Strontium Atomic Arrays with Holographic Metasurfaces

Jul 21, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Degenerate gases, many-body physics, and quantum simulation Poster session


Optical tweezer arrays combined with the rich internal structure of alkaline earth atoms enable explorations of new quantum systems for quantum optics, quantum simulation, and quantum computing. We report on our progress towards programmable arrays of strontium atoms generated with holographic metasurfaces. Innovations of our setup include: (1) Demonstration of a novel dispenser-based 2D MOT for strontium that provides a high atomic flux while being compact. (2) The development and implementation of holographic metasurfaces for the creation of high quality optical tweezer arrays with arbitrary geometries in 1D, 2D, and 3D. We have thoroughly characterized the light patterns generated by the metasurfaces and find that they efficiently produce high-quality trapping potentials. We have performed the characterization with 520 nm light, which is an unexplored magic wavelength of the strontium intercombination line. Recently, we have created an ultracold strontium gas at 1 $\mu$K via narrow line cooling. In the next step, we will trap strontium in holographic optical tweezer arrays. The scientific goals of this platform are the creation of highly entangled many-body quantum states that display subradiance, as well as applications in quantum simulation and quantum computation.

We acknowledge support from NSF QII-TAQS and NSF Convergence Accelerator. W.Y. acknowledges support from the Croucher Foundation.

Presenter name Yuan, Weijun
How will you attend ICAP-27? I am planning on in-person attendance

Primary authors

Mr Weijun Yuan (Columbia University) Mr Aaron Holman (Columbia University) Mr Siwei Zhang (Columbia University) Mr Chun-Wei Liu (Columbia University) Mr Quan Gan (Columbia University) Mr Matthew Molinelli (Columbia University) Mr Xiaoyan Huang (Columbia University) Prof. Nanfang Yu (Columbia University) Dr Minho Kwon (Columbia University) Prof. Sebastian Will (Columbia University)

Presentation materials

There are no materials yet.