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Quantum Information Processing
Erschienen in: Quantum Information Processing 8/2020

01.08.2020

Detection of genuine tripartite entanglement in quantum network scenario

verfasst von: Biswajit Paul, Kaushiki Mukherjee, Sumana Karmakar, Debasis Sarkar, Amit Mukherjee, Arup Roy, Some Sankar Bhattacharya

Erschienen in: Quantum Information Processing | Ausgabe 8/2020

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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.
Vorheriger Artikel Nonclassicality and entanglement properties of non-Gaussian entangled states via a superposition of number-conserving operations
Nächster Artikel q-Deformed three-level quantum logic

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Metadaten
Titel
Detection of genuine tripartite entanglement in quantum network scenario
verfasst von
Biswajit Paul
Kaushiki Mukherjee
Sumana Karmakar
Debasis Sarkar
Amit Mukherjee
Arup Roy
Some Sankar Bhattacharya
Publikationsdatum
01.08.2020
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 8/2020
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-020-02750-1

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