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arXiv · 1503.05084

Experimental generation of entanglement from classical correlations via non-unital local noise

Adeline Orieux·Mario A. Ciampini·Paolo Mataloni·Dagmar Bruß·Matteo Rossi·Chiara Macchiavello
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Abstract

We experimentally show how classical correlations can be turned into quantum entanglement, via the presence of non-unital local noise and the action of a CNOT gate. We first implement a simple two-qubit protocol in which entanglement production is not possible in the absence of local non-unital noise, while entanglement arises with the introduction of noise, and is proportional to the degree of noisiness. We then perform a more elaborate four-qubit experiment, by employing two hyperentangled photons initially carrying only classical correlations. We demonstrate a scheme where the entanglement is generated via local non-unital noise, with the advantage to be robust against local unitaries performed by an adversary.

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Adeline Orieux, Mario A. Ciampini, Paolo Mataloni, Dagmar Bruß, Matteo Rossi, Chiara Macchiavello. 2015-03-17. Experimental generation of entanglement from classical correlations via non-unital local noise. https://doi.org/10.1103/physrevlett.115.160503

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