Verifying genuine high-order entanglement

Che Ming Li, Kai Chen, Andreas Reingruber, Yueh Nan Chen, Jian Wei Pan

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

High-order entanglement embedded in multipartite multilevel quantum systems (qudits) with many degrees of freedom (DOFs) plays an important role in quantum foundation and quantum engineering. Verifying high-order entanglement without the restriction of system complexity is a critical need in any experiments on general entanglement. Here, we introduce a scheme to efficiently detect genuine high-order entanglement, such as states close to genuine qudit Bell, Greenberger-Horne-Zeilinger, and cluster states as well as multilevel multi-DOF hyperentanglement. All of them can be identified with two local measurement settings per DOF regardless of the qudit or DOF number. The proposed verifications together with further utilities such as fidelity estimation could pave the way for experiments by reducing dramatically the measurement overhead.

Original languageEnglish
Article number210504
JournalPhysical review letters
Volume105
Issue number21
DOIs
Publication statusPublished - 2010 Nov 19

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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