BBM92 protocol explained

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 uses only two states instead of four states used by E91 protocol and BB84

Developer:Charles H Bennett, Gilles Brassard and N David Mermin
Introdate: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 [3] [4] for distance of 200–300 m.

References

  1. Bennett . Charles H. . Brassard . Gilles . Mermin . N. David . 1992-02-03 . Quantum cryptography without Bell's theorem . Physical Review Letters . 68 . 5 . 557–559 . 10.1103/PhysRevLett.68.557. 10045931 . 1992PhRvL..68..557B .
  2. Web site: INSPIRE . 2022-09-19 . inspirehep.net.
  3. Web site: Department of Space demonstrates entanglement based quantum communication over 300m free space along with real time cryptographic applications - ISRO . 2022-09-19 . www.isro.gov.in . 2022-02-01 . https://web.archive.org/web/20220201151914/https://www.isro.gov.in/update/31-jan-2022/department-of-space-demonstrates-entanglement-based-quantum-communication-over . dead .
  4. Web site: https://opg.optica.org/viewmedia.cfm?uri=oe-16-23-19118&seq=0 https://core.ac.uk/download/pdf/48631569.pdf BBM92 protocol .

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