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arXiv · 0906.4528

Hybrid photonic entanglement: Realization, characterization and applications

Leonardo Neves·Gustavo Lima·Aldo Delgado·Carlos Saavedra
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Abstract

We show that the quantum disentanglement eraser implemented on a two-photon system from parametric down-conversion is a general method to create hybrid photonic entanglement, namely the entanglement between different degrees of freedom of the photon pair. To demonstrate this, we generate and characterize a source with tunable degree of hybrid entanglement between two qubits, one encoded in the transverse momentum and position of a photon, and the other in the polarization of its partner. In addition, we show that a simple extension of our setup enables the generation of two-photon qubit-qudit hybrid entangled states. Finally, we discuss the advantages that this type of entanglement can bring for an optical quantum network.

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Leonardo Neves, Gustavo Lima, Aldo Delgado, Carlos Saavedra. 2009-06-24. Hybrid photonic entanglement: Realization, characterization and applications. https://doi.org/10.1103/physreva.80.042322

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