An experiment that uses optical tweezers to transport atoms gently enough to preserve their quantum states might prepare the ground for a 'moving head' for quantum computers based on cold neutral atoms.
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Meschede, D. Move around the clock. Nature Phys 3, 684–685 (2007). https://doi.org/10.1038/nphys738
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DOI: https://doi.org/10.1038/nphys738