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arXiv · 1009.5412

Remote Preparation of Single-Photon "Hybrid" Entangled and Vector-Polarization States

Julio T. Barreiro·Tzu-Chieh Wei·Paul G. Kwiat
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Abstract

Quantum teleportation faces increasingly demanding requirements for transmitting large or even entangled systems. However, knowledge of the state to be transmitted eases its reconstruction, resulting in a protocol known as remote state preparation. A number of experimental demonstrations to date have been restricted to single-qubit systems. We report the remote preparation of two-qubit "hybrid" entangled states, including a family of vector-polarization beams. Our single-photon states are encoded in the photon spin and orbital angular momentum. We reconstruct the states by spin-orbit state tomography and transverse polarization tomography. The high fidelities achieved for the vector-polarization states opens the door to optimal coupling of down-converted photons to other physical systems, such as an atom, as required for scalable quantum networks, or plasmons in photonic nanostructures.

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Julio T. Barreiro, Tzu-Chieh Wei, Paul G. Kwiat. 2010-09-27. Remote Preparation of Single-Photon "Hybrid" Entangled and Vector-Polarization States. https://doi.org/10.1103/physrevlett.105.030407

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