Connecting field and intensity correlations: The Siegert relation and how to test it

Author(s)

Ferreira, Dilleys ; Bachelard, Romain ; Guerin, William ; Kaiser, Robin ; Fouche, Mathilde

• Document type: Journal article
• Source: American Journal of Physics; v. 88, n. 10, p. 7-pg., 2020-10-01.

Abstract

The Siegert relation relates electric field and intensity correlations of light, under given assumptions. After a brief derivation of the relation, we present an experimental setup that can be implemented in a student laboratory: it allows measuring both field and intensity correlations at the same time, thus providing a direct test of the Siegert relation. Some experimental results are presented when the scattering medium corresponds to a cold atomic cloud. As a conclusion, we discuss typical situations where the relation fails. (AU)

• FAPESP's process: 18/01447-2 - Correlations of the light scattered by atomic clouds
• Grantee: Romain Pierre Marcel Bachelard
• Support Opportunities: Scholarships abroad - Research
• FAPESP's process: 19/13143-0 - Cold atoms, photons, and quantum correlations
• Grantee: Celso Jorge Villas-Bôas
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/15554-5 - Transport and localization of light in two and three dimensions
• Grantee: Romain Pierre Marcel Bachelard
• Support Opportunities: Research Grants - Young Investigators Grants - Phase 2