From: Security and application of semi-quantum key distribution protocol for users with different quantum capabilities
Qubit efficiency
Number of users
Quantum resources
Ref. [40]
\(\frac{1}{10}\)
Two
Bell states
Ref. [41]
\(\frac{1}{15}\)
Ref. [42]
\(\frac{1}{48}\)
Three
Cluster states
Ref. [43]
\(\frac{1}{38}\)
GHZ states
Our protocol
\(\frac{1}{36}\)
Bell states and single-particles
