In ion trap quantum information processing, efficient fluorescence collection is critical for fast, high-fidelity qubit detection and ion-photon entanglement. The expected size of future many-ion processors require scalable light collection systems. We report on the development and testing of a microfabricated surface-electrode ion trap with an integrated high numerical aperture (NA) micromirror for fluorescence collection. When coupled to a low NA lens, the optical system is inherently scalable to large arrays of mirrors in a single device. We demonstrate stable trapping and transport of 40Ca+ ions over a 0.63 NA micromirror and observe a factor of 1.9 enhancement in photon collection compared to the planar region of the trap.
@article{arxiv.1105.4905,
title = {Demonstration of integrated microscale optics in surface-electrode ion traps},
author = {J. True Merrill and Curtis Volin and David Landgren and Jason M. Amini and Kenneth Wright and S. Charles Doret and C. -S. Pai and Harley Hayden and Tyler Killian and Daniel Faircloth and Kenneth R. Brown and Alexa W. Harter and Richart E. Slusher},
journal= {arXiv preprint arXiv:1105.4905},
year = {2015}
}