Atom-by-atom assembly of defect-free one-dimensional cold atom arrays

• Autores: Manuel Endres, Hannes Bernien, Alexander Keesling
• Localización: Science, ISSN 0036-8075, Vol. 354, Nº 6315, 2016, págs. 1024-1027
• Idioma: inglés
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• Resumen

  • The realization of large-scale fully controllable quantum systems is an exciting frontier in modern physical science. We use atom-by-atom assembly to implement a platform for the deterministic preparation of regular one-dimensional arrays of individually controlled cold atoms. In our approach, a measurement and feedback procedure eliminates the entropy associated with probabilistic trap occupation and results in defect-free arrays of more than 50 atoms in less than 400 milliseconds. The technique is based on fast, real-time control of 100 optical tweezers, which we use to arrange atoms in desired geometric patterns and to maintain these configurations by replacing lost atoms with surplus atoms from a reservoir. This bottom-up approach may enable controlled engineering of scalable many-body systems for quantum information processing, quantum simulations, and precision measurements.