Atom counting in ultra-cold gases using photoionisation and ion detection

Details Atom counting in ultra-cold gases using photoionisation and ion detection Atom counting in ultra-cold gases using photoionisation and ion detection

2006-07-06

arxiv.org/abs/cond-mat/0607170v1

Physics

Condensed Matter

Other Condensed Matter

10 pages, 6 figures

Scientific paper

10.1103/PhysRevA.74.043612

We analyse photoionisation and ion detection as a means of accurately counting ultra-cold atoms. We show that it is possible to count clouds containing many thousands of atoms with accuracies better than $N^{-1/2}$ with current technology. This allows the direct probing of sub-Poissonian number statistics of atomic samples. The scheme can also be used for efficient single atom detection with high spatio-temporal resolution. All aspects of a realistic detection scheme are considered, and we discuss experimental situations in which such a scheme could be implemented.

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