Experimental Quantum Teleportation and Multi-Photon Entanglement via Interfering Narrowband Photon Sources

Details Experimental Quantum Teleportation and Multi-Photon Entanglement via Interfering Narrowband Photon Sources Experimental Quantum Teleportation and Multi-Photon Entanglement via Interfering Narrowband Photon Sources

2009-01-04

arxiv.org/abs/0901.0351v2

Phys. Rev. A 80, 042321 (2009)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.80.042321

In this letter, we report a realization of synchronization-free quantum teleportation and narrowband three-photon entanglement through interfering narrowband photon sources. Since both the single-photon and the entangled photon pair utilized are completely autonomous, it removes the requirement of high demanding synchronization technique in long-distance quantum communication with pulsed spontaneous parametric down-conversion sources. The frequency linewidth of the three-photon entanglement realized is on the order of several MHz, which matches the requirement of atomic ensemble based quantum memories. Such a narrowband multi-photon source will have applications in some advanced quantum communication protocols and linear optical quantum computation.

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