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Quantum Information Processing

Detection of genuine tripartite entanglement in quantum network scenario

  • 01-08-2020
Published in:
Authors
Biswajit Paul
Kaushiki Mukherjee
Sumana Karmakar
Debasis Sarkar
Amit Mukherjee
Arup Roy
Some Sankar Bhattacharya
Published in
Quantum Information Processing | Issue 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.

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previous article Nonclassicality and entanglement properties of non-Gaussian entangled states via a superposition of number-conserving operations
next article q-Deformed three-level quantum logic
Title
Detection of genuine tripartite entanglement in quantum network scenario
Authors
Biswajit Paul
Kaushiki Mukherjee
Sumana Karmakar
Debasis Sarkar
Amit Mukherjee
Arup Roy
Some Sankar Bhattacharya
Publication date
01-08-2020
Publisher
Springer US
Published in
Quantum Information Processing / Issue 8/2020
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-020-02750-1
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