BPN961: Integrated Photonics for Scalable Trapped Ion Quantum Computing

Abstract: 

Photonic integrated circuits (PICs) play a pivotal role in scaling trapped ion quantum systems. However, current quantum PICs suffer from low ion densities. We present a novel quantum PIC for individual optical control of closely-spaced trapped ion qubits. Our device achieves effectively achromatic beam focusing from 405 nm to 810 nm (and beyond) via a planar waveguide lens and a 3D-printed biconic mirror. Moreover, we have measured 30 dB crosstalk at a 5 µm pitch for the 532 nm and 729 nm barium and calcium gate wavelengths, surpassing the state-of-the-art. Finally, our monolithic surface trap integration aims to mitigate the detrimental effects of photoinduced dielectric charging, presenting a potential leap forward in ion trap technology.

Project currently funded by: Federal

Publication date: 
August 12, 2024
Publication type: 
BSAC Project Materials (Current)
Citation: 
PREPUBLICATION DATA - ©University of California 2024

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