TY - JOUR
T1 - Quantification and observation of genuine three-party coherence
T2 - A solution based on classical optics
AU - Qian, X. F.
AU - Wadood, S. A.
AU - Vamivakas, A. N.
AU - Eberly, J. H.
N1 - Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/12/24
Y1 - 2020/12/24
N2 - We introduce a quantification of genuine three-party pure-state coherence for wave fields, classical and quantum, by borrowing concepts from classical optics. The tensor structure of a classical paraxial light beam composed of three principle degrees of freedom is shown to be equivalent to that of a three-qubit quantum state. The traditional basis-independent optical coherence quantity called degree of polarization is then determined to be the desired quantitative two-party coherence measure. When appropriately generalized, a set of fundamental constraint relations is derived among three two-party coherences. The constraint relations can be geometrically interpreted and visualized as tetrahedra nested within a coherence cube. A measure of three-party coherence is defined based on the constraints. We are reporting completed experimental tests and confirmations of the constraints as well as measurement of three-party coherence in the optical context. Our approach based on classical optics also opens an alternative way to analyze quantum coherence.
AB - We introduce a quantification of genuine three-party pure-state coherence for wave fields, classical and quantum, by borrowing concepts from classical optics. The tensor structure of a classical paraxial light beam composed of three principle degrees of freedom is shown to be equivalent to that of a three-qubit quantum state. The traditional basis-independent optical coherence quantity called degree of polarization is then determined to be the desired quantitative two-party coherence measure. When appropriately generalized, a set of fundamental constraint relations is derived among three two-party coherences. The constraint relations can be geometrically interpreted and visualized as tetrahedra nested within a coherence cube. A measure of three-party coherence is defined based on the constraints. We are reporting completed experimental tests and confirmations of the constraints as well as measurement of three-party coherence in the optical context. Our approach based on classical optics also opens an alternative way to analyze quantum coherence.
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U2 - 10.1103/PhysRevA.102.062424
DO - 10.1103/PhysRevA.102.062424
M3 - Article
AN - SCOPUS:85098594850
SN - 2469-9926
VL - 102
JO - Physical Review A
JF - Physical Review A
IS - 6
M1 - 062424
ER -