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Distributing Entanglement with Separable States

Our latest publication was highlighted within an APS viewpoint on "Sharing Entanglement without Sending It"

We experimentally demonstrate a protocol for entanglement distribution by a separable quantum system. In our experiment, two spatially separated modes of an electromagnetic field get entangled by local operations, classical communication, and transmission of a correlated but separable mode between them. This highlights the utility of quantum correlations beyond entanglement for the establishment of a fundamental quantum information resource and verifies that its distribution by a dual classical and separable quantum communication is possible.


Publication: Phys. Rev. Lett. 111, 230506 (2013)

APS Viewpoint: Physics 6, 132 (2013)

Contact: Christian Peuntinger (QIV)