Journal
OPTICA
Volume 4, Issue 2, Pages 172-177Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.4.000172
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Funding
- Engineering and Physical Sciences Research Council (EPSRC)
- European Research Council (ERC)
- Seventh Framework Programme (FP7) [323734 BBOI]
- UK Quantum Communications Hub
- EPSRC [EP/K021931/1, EP/J017175/1, EP/M013472/1, EP/I035935/1, EP/K033085/1, EP/L024020/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K033085/1, EP/J017175/1, EP/I035935/1, EP/K021931/1, EP/M013472/1, 1247158, EP/L024020/1] Funding Source: researchfish
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Integrated photonics offers great potential for quantum communication devices in terms of complexity, robustness, and scalability. Silicon photonics in particular is a leading platform for quantum photonic technologies, with further benefits of miniaturization, cost-effective device manufacture, and compatibility with CMOS microelectronics. However, effective techniques for high-speed modulation of quantum states in standard silicon photonic platforms have been limited. Here we overcome this limitation and demonstrate high-speed low-error quantum key distribution modulation with silicon photonic devices combining slow thermo-optic DC biases and fast (10 GHz bandwidth) carrier-depletion modulation. The ability to scale up these integrated circuits and incorporate microelectronics opens the way to new and advanced integrated quantum communication technologies and larger adoption of quantum-secured communications. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
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