A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf
.
Two-time state formalism for quantum eavesdropping
2018
Physical Review A
The key piece of knowledge which quantum eavesdroppers can access is the correlation between prior and future events, i.e. the post-selected results of the legitimate preparations and measurements. We present a method for optimising eavesdropping strategies which is closely related to the two-time state formalism, the natural way to analyse such scenarios; it converts the task of optimisation into an eigenvalue problem. Our framework is applied to the familiar BB84 and B92 protocols as well as
doi:10.1103/physreva.98.052339
fatcat:nh4yg3ytrnakteavszmlaz7you