Review Article
A Primer on Underwater Quantum Key Distribution
| Signal type | Protocol type | Name | Year |
| Discrete variable QKD | Prepare and measure protocols | BB84 [25] | 1984 | B92 [33] | 1992 | Six-state [34] | 1998 | Decoy-state [35] | 2003 | SARG04 [36] | 2004 | Entanglement based | E91 [37] | 1991 | BBM92 [38] | 1992 | MDI-QKD [39] | 2012 | TF-QKD [40] | 2018 | PM-QKD [41] | 2018 |
| Continuous variable QKD | Gaussian modulation | 2003 | Discrete modulation | 2011 |
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