Demonstration of integrated microscale optics in surface-electrode ion traps
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 requires 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 the stable trapping and transport of 40Ca+ ions over a 0.63 NA micromirror and observe a factor of 1.9 enhancement of photon collection compared to the planar region of the trap. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Merrill, JT; Volin, C; Landgren, D; Amini, JM; Wright, K; Doret, SC; Pai, CS; Hayden, H; Killian, T; Faircloth, D; Brown, KR; Harter, AW; Slusher, RE
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