In situ single-atom array synthesis using dynamic holographic optical tweezers

Hyosub Kim, Woojun Lee, Han-gyeol Lee, Hanlae Jo, Yunheung Song and Jaewook Ahn ()
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Hyosub Kim: KAIST
Woojun Lee: KAIST
Han-gyeol Lee: KAIST
Hanlae Jo: KAIST
Yunheung Song: KAIST
Jaewook Ahn: KAIST

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract Establishing a reliable method to form scalable neutral-atom platforms is an essential cornerstone for quantum computation, quantum simulation and quantum many-body physics. Here we demonstrate a real-time transport of single atoms using holographic microtraps controlled by a liquid-crystal spatial light modulator. For this, an analytical design approach to flicker-free microtrap movement is devised and cold rubidium atoms are simultaneously rearranged with 2N motional degrees of freedom, representing unprecedented space controllability. We also accomplish an in situ feedback control for single-atom rearrangements with the high success rate of 99% for up to 10 μm translation. We hope this proof-of-principle demonstration of high-fidelity atom-array preparations will be useful for deterministic loading of N single atoms, especially on arbitrary lattice locations, and also for real-time qubit shuttling in high-dimensional quantum computing architectures.

Date: 2016
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DOI: 10.1038/ncomms13317

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