Quantum protocol without Bell theorem
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.[1] It is named after the trio's surnames as (Bennett, Brassard and Mermin, BBM92).[2] It uses decoy state of multiple photon instead of single. The key differences in E91 protocol and B92[3] uses only two states instead of four states used by E91 protocol and BB84
BBM92 protocol 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 [4] [5] 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 .
^ "INSPIRE" . inspirehep.net . Retrieved 2022-09-19 .
^ 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 .
^ https://opg.optica.org/viewmedia.cfm?uri=oe-16-23-19118&seq=0 https://core.ac.uk/download/pdf/48631569.pdf "BBM92 protocol" (PDF) .