METHOD AND SYSTEM FOR PROVIDING A PRE-DETERMINED KEY TO A CLASSICAL COMPUTER OF A PUBLIC HYBRID QUANTUM AND CLASSICAL NETWORK

摘要

A system (CS) provides bit strings to N classical computers (CCn), coupled to N quantum computers (QCn) having N locations, and comprises:- first processing means (PM1) defining N first states |〉for N locations from a bit string, then an operator= (|〉〈|+ |(|〉〈|) for a nth classical computer (CC2), where |(〉 is a spin-off state,- first control means (CM1) controlling transmission of the operator and a definition of a protocol to the nth classical computer (CC2),- second control means (CM2) controlling set-up of the N first states into the N quantum computers (QCn),- second processing means (PM2) applying P times the operator on the first state into the nth quantum computer (QC2) to obtain P spin-off states, and- third processing means (PM3) determining an average result from these P spin-off states, and applying the protocol to this determined average result to retrieve the bit string.