Fisher information as a generalized measure of coherence in classical and quantum optics | Zendy

Alfredo Luis | Zendy

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Fisher information as a generalized measure of coherence in classical and quantum optics

Author(s) -

Alfredo Luis

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.024686

Subject(s) - coherence (philosophical gambling strategy) , optics , coherence theory , quantum optics , physics , degree of coherence , measure (data warehouse) , physical optics , fisher information , polarization (electrochemistry) , metrology , quantum imaging , statistical physics , gaussian , quantum , quantum mechanics , quantum information , coherence length , statistics , mathematics , computer science , quantum network , superconductivity , chemistry , database

We show that metrological resolution in the detection of small phase shifts provides a suitable generalization of the degrees of coherence and polarization. Resolution is estimated via Fisher information. Besides the standard two-beam Gaussian case, this approach provides also good results for multiple field components and nonGaussian statistics. This works equally well in quantum and classical optics.

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