3 November 2016 Multiplexed entangled photon-pair sources for all-fiber quantum networks
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Abstract
The ultimate goal of quantum information science is to build a global quantum network, which enables quantum resources to be distributed and shared between remote parties. Such a quantum network can be realized using only fiber elements, thus deriving the advantages of low transmission loss, low cost, scalability, and integrability through mature fiber communication techniques such as dense wavelength division multiplexing. Hence high-quality entangled-photon sources based on fibers are in high demand. Here we report multiplexed polarization- and time-bin-entangled photon-pair sources based on the dispersion-shifted fiber operating at room temperature. The associated high quality of entanglement is characterized using interference, Bell’s inequality, and quantum state tomography. The simultaneous presence of both types of entanglement in multi-channel pairs of a 100-GHz dense wavelength division multiplexing device indicates a great capacity in distributing entangled photons over multiple users. Our design provides a versatile platform and takes a big step toward constructing an all-fiber quantum network.
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Zhi-Yuan Zhou, Zhi-Yuan Zhou, Yin-Hai Li, Yin-Hai Li, Li-Xin Xu, Li-Xin Xu, Bao-Sen Shi, Bao-Sen Shi, Guang-Can Guo, Guang-Can Guo, } "Multiplexed entangled photon-pair sources for all-fiber quantum networks", Proc. SPIE 10029, Quantum and Nonlinear Optics IV, 1002904 (3 November 2016); doi: 10.1117/12.2245121; https://doi.org/10.1117/12.2245121
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