Abstract
We have performed quantum nondemolition measurements on the collective spin of cesium atoms. In this way ensembles of atoms with sub-shot-noise fluctuations of a collective spin have been prepared. These observations open the way toward the generation of squeezed spin states of atoms.
- Received 21 December 1998
DOI:https://doi.org/10.1103/PhysRevA.60.2346
©1999 American Physical Society