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A size criterion for macroscopic superposition states

Gunnar Björk·Piero G. Luca Mana
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Abstract

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.

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Gunnar Björk, Piero G. Luca Mana. 2004-06-09. A size criterion for macroscopic superposition states. https://doi.org/10.1088/1464-4266/6/11/001

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