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|Title:||Geometry of quantum correlations in space-time||Authors:||Zhao, Zhikuan
Fitzsimons, Joseph F.
|Issue Date:||2018||Source:||Zhao, Z., Pisarczyk, R., Thompson, J., Gu, M., Vedral, V., & Fitzsimons, J. F. (2018). Geometry of quantum correlations in space-time. Physical Review A, 98(5), 052312-. doi: 10.1103/PhysRevA.98.052312||Series/Report no.:||Physical Review A||Abstract:||The traditional formalism of nonrelativistic quantum theory allows the state of a quantum system to extend across space, but only restricts it to a single instant in time, leading to distinction between theoretical treatments of spatial and temporal quantum correlations. Here we unify the geometrical description of two-point quantum correlations in space-time. Our study presents the geometry of correlations between two sequential Pauli measurements on a single qubit undergoing an arbitrary quantum channel evolution together with two-qubit spatial correlations under a common framework. We establish a symmetric structure between quantum correlations in space and time. This symmetry is broken in the presence of nonunital channels, which further reveals a set of temporal correlations that are indistinguishable from correlations found in bipartite entangled states.||URI:||https://hdl.handle.net/10356/89154
|ISSN:||2469-9926||DOI:||10.1103/PhysRevA.98.052312||Rights:||© 2018 American Physical Society. This paper was published in Physical Review A and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevA.98.052312]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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