Measurement of sub-shot-noise spatial correlations without background subtraction

Phys Rev Lett. 2009 May 29;102(21):213602. doi: 10.1103/PhysRevLett.102.213602. Epub 2009 May 28.

Abstract

In this Letter we present the measurement of sub-shot-noise spatial correlations without any subtraction of background, a result paving the way to realize sub-shot-noise imaging of weak objects.