Vadim Makarov Improving security of a QKD system via an external audit

Vadim Makarov (Russian Quantum Center, Moscow, Russia) Improving security of a QKD system via an external audit I report methodology for security evaluation of a QKD system that we have recently applied to several commercial devices. Results from one of them, a subcarrier wave QKD system developed by ITMO University, will be shown 1. Our audit and the followup work by the manufacturer have led to a marked improvement in implementation quality. We hope this methodology contributes to future standards for