Experimental Quantum Teleportation and Multi-Photon Entanglement via Interfering Narrowband Photon Sources
arXiv:0901.0351 · doi:10.1103/PhysRevA.80.042321
Abstract
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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- Quantum interface between frequency-uncorrelated down-converted entanglement and atomic-ensemble quantum memory
- Bragg-Grating Enhanced Narrow-Band Spontaneous Parametric Down Conversion
- Analysis of quantum tomography protocol efficiency for triphoton polarization states