  In this work we introduce a novel QKD protocol capable of smoothly
transitioning, via user-tuneable parameter, from classical to semi-quantum in
order to help understand the effect of quantum communication resources on
secure key distribution. We perform an information theoretic security analysis
of this protocol to determine what level of "quantumness" is sufficient to
achieve security, and we discover some rather interesting properties of this
protocol along the way.

Quantum Physics