Joint Effect of Coherence and Polarization on the Quantification of Visibility and Distinguishability
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The wave-particle duality appeared as a quintessential concept in quantum mechanics since the inception of the theory, yet it still attracts attention due to its nonintuitive consequences. In the case of light, this property is known to be manifested in a simplified form in two-way interferometers through the investigation of complementary properties like visibility and distinguishability. Here, we derive two measurable quantifiers of these properties in terms of the entries of the density operator of a general quantum photonic state which encapsulate simultaneously the influence of both coherence and polarization. We observe that these quantifiers fulfill the Englert–Greenberger–Yasin inequality.
KeywordsInterferometry Complementarity principle Photonic mixed states
The author received financial support from the Brazilian funding agency CNPq, Grant Number 309292/2016-6.
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