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arXiv · 1801.10444

Device-independent entanglement certification of all entangled states

Joseph Bowles·Ivan Šupić·Daniel Cavalcanti·Antonio Acín
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Abstract

We present a method to certify the entanglement of all bipartite entangled quantum states in a device-independent way. This is achieved by placing the state in a quantum network and constructing a correlation inequality based on an entanglement witness for the state. Our method is device-independent, in the sense that entanglement can be certified from the observed statistics alone, under minimal assumptions on the underlying physics. Conceptually, our results borrow ideas from the field of self-testing to bring the recently introduced measurement-device-independent entanglement witnesses into the fully device-independent regime.

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Joseph Bowles, Ivan Šupić, Daniel Cavalcanti, Antonio Acín. 2018-12-03. Device-independent entanglement certification of all entangled states. https://doi.org/10.1103/physrevlett.121.180503

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