B92 protocol
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The B92 protocol is a quantum key distribution (QKD) protocol developed by Charles H. Bennett in 1992. It is notable for its use of only two nonorthogonal states, as opposed to the four states used in the E91 protocol and BB84. This simplicity has made it a popular choice for QKD systems, as it is easier to implement and requires less resources.[1]
Features[edit]
One key feature of the B92 protocol is its unconditional security, which has been proven in a variety of different scenarios, including over lossy and noisy channels, as well as in loss-free channels. This security is achieved through the use of entanglement distillation protocols (EDP), which are used to prepare the state for transmission. In the B92 protocol, Alice prepares the state by measuring the entanglement state on the Z basis, while Bob measures the state using local filtering and a Z basis measurement.[1]
The security of the B92 protocol is also determined by the number of errors and the number of filter pairs used in the process. The number of errors is used to calculate the bit errors, while the number of filter pairs is used to calculate the phase errors.[1]
See also[edit]
References[edit]
- ↑ 1.0 1.1 1.2 Ali, Norshamsuri; Radzi, N. A. N. Mat (January 2020). "Security of B92 protocol with uninformative states in asymptotic limit with composable security". AIP Conference Proceedings. Retrieved December 26, 2022.
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