Multiplexed storage and real-time manipulation based on a multiple degree-of-freedom quantum memory

Nature Communications
Tian-Shu YangGuang-Can Guo

Abstract

The faithful storage and coherent manipulation of quantum states with matter-systems would enable the realization of large-scale quantum networks based on quantum repeaters. To achieve useful communication rates, highly multimode quantum memories are required to construct a multiplexed quantum repeater. Here, we present a demonstration of on-demand storage of orbital-angular-momentum states with weak coherent pulses at the single-photon-level in a rare-earth-ion-doped crystal. Through the combination of this spatial degree-of-freedom (DOF) with temporal and spectral degrees of freedom, we create a multiple-DOF memory with high multimode capacity. This device can serve as a quantum mode converter with high fidelity, which is a fundamental requirement for the construction of a multiplexed quantum repeater. This device further enables essentially arbitrary spectral and temporal manipulations of spatial-qutrit-encoded photonic pulses in real time. Therefore, the developed quantum memory can serve as a building block for scalable photonic quantum information processing architectures.

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Citations

Jan 5, 2019·Physical Review Letters·Michał ParniakRafał Demkowicz-Dobrzański
Jan 18, 2020·Physical Review Letters·Kevin C CoxPaul D Kunz
Jun 13, 2020·Physical Review Letters·Lukas HellerHugues de Riedmatten
Sep 7, 2019·Physical Review Letters·Alessandro SeriHugues de Riedmatten
Jan 16, 2021·Physical Review Letters·Chao LiuGuang-Can Guo
Apr 24, 2021·Nature Communications·Yu MaGuang-Can Guo
Jun 4, 2021·Nature·Dario Lago-RiveraHugues de Riedmatten
Jul 2, 2021·Optics Letters·Michał Lipka, Michał Parniak
Jul 21, 2021·Nature Communications·You-Zhi MaGuang-Can Guo
Mar 29, 2019··Mateusz MazelanikAdam Leszczyński

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