Multiprotocol Quantum Key Distribution Receiver for Free Space

Alfonso Tello Castillo, Ugo Zanforlin, Gerald Stuart Buller, Ross J. Donaldson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Quantum Key Distribution (QKD), a technology for growing mathematically secure key encryption keys, is now on the verge of becoming widely commercially available. Due to lack of standardization, multiprotocol QKD receivers are particularly beneficial for satellite QKD, so that an optical ground station is not limited to a sub-set of satellites. Moreover, if both transmitter and receiver can operate with different protocols, they will be able to actively adapt to specific conditions by choosing the most suitable protocol. In this work, we present the design and performance of a multiprotocol reconfigurable free-space QKD receiver. The reconfigurability relies on polarization-based optical routing, which can also be used to optimize the performance of time-bin QKD protocols.
Original languageEnglish
Title of host publicationQuantum Technology: Driving Commercialisation of an Enabling Science III
EditorsMiles J. Padgett, Kai Bongs, Alessandro Fedrizzi, Alberto Politi
Publication statusPublished - 11 Jan 2023

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


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