BBM92 is a quantum key distribution without Bell's theorem developed using polarized entangled photon pairs by Charles H. Bennett, Gilles Brassard and N. David Mermin in 1992. It is named after the trio's surnames as (Bennett, Brassard and Mermin, BBM92). It uses decoy state of multiple photon instead of single. The key differences in E91 protocol and B92 uses only two states instead of four states used by E91 protocol and BB84
 BBM92 protocol | |
| Developed by | Charles H Bennett, Gilles Brassard and N David Mermin |
|---|---|
| Introduced | February 3, 1992 |
It is used for non orthogonal quantum transmission 0 can be encrypted as 0 degree and 1 as 45 degree in diagonal basis BB92 protocol. There are no eavesdropping secure and hack proof for distance of 200–300 m.
References
- Bennett, Charles H.; Brassard, Gilles; Mermin, N. David (1992-02-03). "Quantum cryptography without Bell's theorem". Physical Review Letters. 68 (5): 557–559. Bibcode:1992PhRvL..68..557B. doi:10.1103/PhysRevLett.68.557. PMID 10045931.
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- Ekert, Artur K. (1992), Tombesi, Paolo; Walls, Daniel F. (eds.), "Quantum Cryptography and Bell's Theorem", Quantum Measurements in Optics, NATO ASI Series, vol. 282, Boston, MA: Springer US, pp. 413–418, doi:10.1007/978-1-4615-3386-3_34, ISBN 978-1-4615-3386-3, retrieved 2022-09-19
- "Department of Space demonstrates entanglement based quantum communication over 300m free space along with real time cryptographic applications - ISRO". www.isro.gov.in. Archived from the original on 2022-02-01. Retrieved 2022-09-19.
- "BBM92 protocol" (PDF).
- "Long-distance entanglement-based quantum key distribution over optical fiber". Retrieved 2024-09-05.
- P. Peleso, Matthew. "Daylight operation of a free space, entanglement-based quantum key distribution system" (PDF). University of Waterloo. Retrieved 2024-09-05.