11.   Correlating groups of atoms this way may find a use in quantum computers, devices where calculations are performed using single atoms or particles as counters.

12.   In their studies, the Dutch and Harvard teams used scanning tunneling microscopes, probes so fine that their tips consist of single atoms.

13.   In the quantum computing experiment, the scientists performed the calculation by manipulating single atoms, the submicroscopic equivalent of abacus beads.

14.   Other scientists had already demonstrated that single atoms or molecules could be placed in the catlike condition known as quantum superposition.

15.   The tip tapers down to a single atom.

16.   They put a single atom in two places at once and measured the breakdown of this quantum state more methodically than ever before.

17.   To detect the pull of a single atom requires an ultrasensitive device like the cantilever.

18.   He said that with their setup, it is too difficult to pinpoint a single atom among all the collision byproducts.

19.   The experiments I have mentioned can be observed using waves associated with a single atom.