The characterization of quantum coherence in the context of quantum information theory and its interplay with quantum correlations is currently subject of intense study. Coherence in a Hamiltonian eigenbasis yields asymmetry, the ability of a quantum system to break a dynamical symmetry generated by the Hamiltonian. We here propose an experimental strategy to witness multipartite entanglement in many-body systems by evaluating the asymmetry with respect to an additive Hamiltonian. We test our scheme by simulating asymmetry and entanglement detection in a three-qubit Greenberger-Horne-Zeilinger (GHZ) diagonal state.
Witnessing multipartite entanglement by detecting asymmetry / Girolami, D.; Yadin, B.. - In: ENTROPY. - ISSN 1099-4300. - 19:3(2017), p. 124.
Titolo: | Witnessing multipartite entanglement by detecting asymmetry |
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Data di pubblicazione: | 2017 |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.3390/e19030124 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/2849523