Table 5.
Comparison to the existing MSQKD protocols.
| Krawec’s21 | Liu et al.’s24 | Lin et al.’s25 | Tsai et al.’s26 | Our protocol | |
|---|---|---|---|---|---|
| Semi-quantum environment | Measure-resend | Measurement-free | Measure-resend | Lightweight unitary operation | Lightweight unitary operation |
| Quantum capability of classical participant |
(1) Generation (2) Measurement (3) Reflection |
(1) Generation (2) Reflection (3) Reorder |
(1) Generation (2) Measurement (3) Reflection |
(1) Measurement (2) Operation |
(1) Measurement (2) Operation |
| Quantum resources |
(1) Single photon (2) Bell state |
(1) Single photon (2) Bell state |
Single photon | Single photon | Bell state |
| Trustworthiness level of TP | Dishonest | Dishonest | Dishonest | Honest | Dishonest |
| Qubit efficiency | 1/24 | 1/8 | 1/24 | 1/32 | 1/8 |
| Time for maintaining qubits | 2t | 2t + r | 2t | t | t |
| Equipping with detectors or not | Yes | Yes | Yes | No | No |