Experimental Generation of Robust Entanglement from Classical Correlations via Local Dissipation

Year: 2015

Authors: Orieux A., Ciampini MA., Mataloni P., Bruss D., Rossi M., Macchiavello C.

Autors Affiliation: Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Consiglio Nazl Ric INO CNR, Ist Nazl Ott, I-50125 Florence, Italy; Univ Dusseldorf, Inst Theoret Phys 3, D-40225 Dusseldorf, Germany; Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy;‎ Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

Abstract: We experimentally show how classical correlations can be turned into quantum entanglement, via the presence of dissipation 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 such kind of noise, while it arises with its introduction, and is proportional to its amount. 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 dissipation, with the advantage of being robust against local unitaries performed by an adversary.


Volume: 115 (16)      Pages from: 160503-1  to: 160503-5

KeyWords: entanglement
DOI: 10.1103/PhysRevLett.115.160503

Citations: 14
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