Back Cover: Photon Number Splitting Attack – Proposal and Analysis of an Experimental Scheme (Adv. Quantum Technol. 7/2024)

Abstract

Depicted is a novel setup for realizing the photon number splitting (PNS) attack with current-day technology, namely, using the single-photon Raman interaction. In article number 2300437, Eliahu Cohen and co-workers analyze the amount of information which the eavesdropper (Eve) can obtain using this physical realization of PNS, concluding that while part of the secret key is at risk when weak coherent states are used, there is still a price for Eve to pay in terms of the induced noise. This stresses the importance of proper countermeasures.