Title

Bell'S Measure In Classical Optical Coherence

Abstract

The statistical description of optical fields in classical coherence theory is the foundation for many applications in metrology, microscopy, lithography and astronomy. Partial coherence is commonly attributed to underlying fluctuations originating at the source or arising upon passage through a random medium. A less acknowledged source of uncertainty (partial coherence) stems from the act of ignoring a degree of freedom of a beam when observing another degree of freedom coupled to (or classically entangled with) it. We demonstrate here that Bell's measure, which is commonly used in tests of quantum non-locality, may be used as a quantitative tool in classical optical coherence to delineate native incoherence associated with statistical fluctuations from correlation- (or, entanglement-) based incoherence. Our results demonstrate the applicability of the concepts recently developed in quantum information science to classical optical coherence theory and optical signal processing. © 2013 Macmillan Publishers Limited.

Publication Date

1-1-2013

Publication Title

Nature Photonics

Volume

7

Issue

1

Number of Pages

72-78

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1038/nphoton.2012.312

Socpus ID

84871971227 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84871971227

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