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Detection of genuine tripartite entanglement in quantum network scenario
B. Paul, K. Mukherjee, S. Karmakar, , A. Mukherjee, A. Roy, S.S. Bhattacharya
Published in Springer
2020
Volume: 19
   
Issue: 8
Abstract
Experimental demonstration of entanglement needs to have a precise control of experimentalist over the system on which the measurements are performed as prescribed by an appropriate entanglement witness. To avoid such trust problem, recently, device-independent entanglement witnesses (DIEWs) for genuine tripartite entanglement have been proposed where witnesses are capable of testing genuine entanglement without precise description of Hilbert space dimension and measured operators i.e. apparatus are treated as black boxes. Here, we design a protocol for enhancing the possibility of identifying genuine tripartite entanglement in a device independent manner. We consider three mixed tripartite quantum states none of whose genuine entanglement can be detected by applying certain DIEWs, but their genuine tripartite entanglement can be detected by applying the same when distributed in some suitable entanglement swapping network. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
About the journal
JournalData powered by TypesetQuantum Information Processing
PublisherData powered by TypesetSpringer
ISSN15700755
Open AccessNo