Reservoir-based deterministic loading of single-atom tweezer arrays

• URL: http://arxiv.org/abs/2302.12730v4
• Date: Wed, 2 Aug 2023 15:51:21 GMT
• Title: Reservoir-based deterministic loading of single-atom tweezer arrays
• Authors: Lars Pause, Tilman Preuschoff, Dominik Sch\"affner, Malte Schlosser, Gerhard Birkl
• Abstract summary: State-of-the-art individual-atom tweezer platforms have relied on spatially superimposing the tweezer array with a cloud of cold atoms created beforehand. We introduce a modular scheme built on an additional cold-atom reservoir and an array of buffer traps. The results facilitate increased data rates and unlock a path to continuous operation of individual-atom tweezer arrays in quantum science.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: State-of-the-art individual-atom tweezer platforms have relied on loading schemes based on spatially superimposing the tweezer array with a cloud of cold atoms created beforehand. Together with immanent atom loss, this dramatically limits the data rate, as the application sequence must be alternated with the time-consuming phases of magneto-optical trapping and laser cooling. We introduce a modular scheme built on an additional cold-atom reservoir and an array of buffer traps effectively decoupling cold-atom accumulation and single-atom supply from the quantum-register operation. For this purpose, we connect a microlens-based tweezer array to a cloud of laser-cooled atoms held in an auxiliary large-focus dipole trap by utilizing atom transport and buffer traps for dedicated single-atom supply. We demonstrate deterministic loading of a hexagonal target structure with atoms solely originating from the reservoir trap. The results facilitate increased data rates and unlock a path to continuous operation of individual-atom tweezer arrays in quantum science, making use of discrete functional modules, operated in parallel and spatially separated.

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