Atom-by-atom assembly of defect-free one-dimensional cold atom arrays.
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.
Department of Physics, Harvard University, Cambridge, MA 02138, USA. mendres@caltech.edu.|Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA.
Manuel
M
Endres
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Hannes
H
Bernien
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Alexander
A
Keesling
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Harry
H
Levine
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Eric R
ER
Anschuetz
Department of Physics, Harvard University, Cambridge, MA 02138, USA. mendres@caltech.edu.
Alexandre
A
Krajenbrink
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Crystal
C
Senko
Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Vladan
V
Vuletic
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Markus
M
Greiner
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Mikhail D
MD
Lukin