Security against jamming in imaging with partially-distinguishable photons

Roga, Wojciech and Jeffers, John (2016) Security against jamming in imaging with partially-distinguishable photons. In: Quantum Information Science and Technology II. Proceedings of SPIE, 9996 . SPIE, Bellingham, WA. ISBN 9781510603967

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    Abstract

    We describe a protocol in which we detect intercept-resend jamming of imaging and can reverse its effects. The security is based on control of the polarization states of photons that are sent to interrogate an object and form an image at a camera. The scheme presented here is a particular implementation of a general anti-jamming protocol established by Roga and Jeffers in Ref. 5. It is applied here to imaging by photons with partially distinguishable polarisation states. The protocol in this version is easily applicable as only single photon states are involved, however the efficiency is traded off against the intrusion detectability because of a leak of information to the intruder.