期刊
QUANTUM SCIENCE AND TECHNOLOGY
卷 4, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2058-9565/ab3f59
关键词
quantum optics; entanglement; hyperentanglement; nonlinear optics
资金
- Foundation Simone Cino Del Duca
- European Commission for the FP7-ITN PICQUE project [608062]
- l'Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0333-01, ANR-EMMA-002-01, ANR-14-CE26-0038, ANR-14-CE32-0019]
- iXCore Research Foundation
- French government through its program 'Investments for the Future' under the Universite Cote d'Azur UCA-JEDI project (under the label Quantum@ UCA) [ANR-15-IDEX-01]
- European Union
- Region PACA
- Fond Europeen de Developpement Regional, FEDER
- Agence Nationale de la Recherche (ANR) [ANR-14-CE26-0038, ANR-09-BLAN-0333, ANR-14-CE32-0019] Funding Source: Agence Nationale de la Recherche (ANR)
Entanglement is a key resource in quantum information science and associated emerging technologies. Photonic systems offer a large range of exploitable entanglement degrees of freedom (DOF) such as frequency, time, polarization, and spatial modes. Hyperentangled photons exploit multiple DOF simultaneously to enhance the performance of quantum information protocols. Here, we report a fully guided-wave approach for generating polarization and energy-time hyperentangled photons at telecom wavelengths. Moreover, by demultiplexing the broadband emission spectrum of the source into five standard telecom channel pairs, we demonstrate compliance with fibre network standards and improve the effective bit rate capacity of the quantum channel up to one order of magnitude. In all channel pairs, we observe a violation of a generalised Bell inequality by more than 27 standard deviations, underlining the relevance of our approach.
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