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arXiv · 1705.03681

Solid state source of non-classical photon pairs with embedded multimode quantum memory

Kutlu Kutluer·Margherita Mazzera·Hugues de Riedmatten
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Abstract

The generation and distribution of quantum correlations between photonic qubits is a key resource in quantum information science. For applications in quantum networks and quantum repeaters, it is required that these quantum correlations be stored in a quantum memory. In 2001, Duan, Lukin, Cirac, and Zoller (DLCZ) proposed a scheme combining a correlated photon-pair source and a quantum memory in atomic gases, which has enabled fast progress towards elementary quantum networks. In this letter, we demonstrate a solid state source of correlated photon pairs with embedded spin-wave quantum memory, using a rare-earth doped crystal. We show strong quantum orrelations between the photons, high enough for performing quantum communication. Unlike the original DLCZ proposal, our scheme is inherently multimode thanks to a built-in rephasing mechanism, allowing us to demonstrate storage of 11 temporal modes. These results represent an important step towards the realization of complex quantum networks architectures using solid-state resources.

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Kutlu Kutluer, Margherita Mazzera, Hugues de Riedmatten. 2017-08-22. Solid state source of non-classical photon pairs with embedded multimode quantum memory. https://doi.org/10.1103/physrevlett.118.210502

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