%0 Journal Article
%T A size criterion for macroscopic superposition states
%A Gunnar Bj£¿rk
%A Piero G. Luca Mana
%J Physics
%D 2003
%I arXiv
%R 10.1088/1464-4266/6/11/001
%X An operational measure to quantify the sizes of some ``macroscopic quantum superpositions'', realized in recent experiments, is proposed. The measure is based on the fact that a superposition presents greater sensitivity in interferometric applications than its superposed constituent states. This enhanced sensitivity, or ``interference utility'', may then be used as a size criterion among superpositions.
%U http://arxiv.org/abs/quant-ph/0310193v2