World's First Monolithic SiGe QKD Transmitter Chip
We present a single-chip photonic QKD transmitter fabricated on a silicon platform. We achieve secure-key generation over 45.9km of field-deployed fiber and prove its operation along 32 WDM channels, by sourcing light without III-V materials.
Authors
- Michael Hentschel (ORCID: https://orcid.org/0000-0003-3986-5725)
- W. Boxleitner (ORCID: https://orcid.org/0000-0002-6960-9434)
- Philip Walther (ORCID: https://orcid.org/0000-0002-4964-817X)
- Bernhard Schrenk (ORCID: https://orcid.org/0000-0001-5374-0078)
- Hannes Hübel (ORCID: https://orcid.org/0000-0002-1173-1904)
- Florian Honz (ORCID: https://orcid.org/0000-0001-5045-6047)
- Mariana Ferreira-Ramos
Institutions
- University of Vienna (AT)
- Vienna Center for Quantum Science and Technology (AT)
Publication Details
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1364/ofc.2025.th4d.7
- Citations
- 2
- Primary Topic
- Semiconductor Quantum Structures and Devices
- Type
- article
- Field-Weighted Citation Impact
- 2.49