Using arrays of a single type of neutral atom, researchers have recently demonstrated that they can orchestrate atomic interactions for applications such as quantum computing or the controlled formation of single molecules. They are now looking to create neutral-atom arrays from multiple atomic species, something that could enable more advanced quantum computing protocols, for example. Toward that goal, Xiaodong He of the Wuhan Institute of Physics and Mathematics, China, and colleagues have now experimentally demonstrated how to produce arrays containing two different rubidium isotopes [1]. The demonstration parallels another by a team led by Hannes Bernien at the University of Chicago, which realized arrays of rubidium and cesium atoms [2].
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