Mirrored entanglement witnesses

Cited 1 time in webofscience Cited 0 time in scopus
  • Hit : 221
  • Download : 50
Entanglement detection, which signifies the task of distinguishing entangled states from separable states, can be generally performed by realizing entanglement witnesses via local measurements on a single-copy level and classical communication, and are known to be experimenter friendly. We introduce a framework of constructing mirrored entanglement witnesses by showing that an experimental observable is twice as effective since it generally provides bounds from above and below for separable states. Differently stated, a pair of witnesses, mirrored witnesses, exists for the characterization of the bounds, which are two faces of one observable. We show how to generally construct those witnesses and provide examples for bipartite and multipartite systems. We also show that both mirrored witnesses can be improved by introducing nonlinearities, by which a larger set of entangled states can be certified.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2020-02
Language
English
Article Type
Article
Citation

NPJ QUANTUM INFORMATION, v.6, no.1

ISSN
2056-6387
DOI
10.1038/s41534-020-0242-z
URI
http://hdl.handle.net/10203/272396
Appears in Collection
EE-Journal Papers(저널논문)
Files in This Item
000510713700001.pdf(931.43 kB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 1 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0