Salīdzināt metodes

	Kvantitatīvā atslēgu izplatīšana (BB84)	Kvantitatīvā fāzes novērtēšana
Nozare	Kvantu skaitļošana	Kvantu skaitļošana
Saime	Machine learning	Machine learning
Izcelsmes gads	1984	1995
Autors	Charles Bennett and Gilles Brassard	Alexei Kitaev
Tips	Cryptographic protocol	Subroutine algorithm
Pirmavots	Bennett, C. H., Brassard, G. (1984). Quantum cryptography: public key distribution and coin tossing. Proceedings of IEEE International Conference on Computers, Systems, and Signal Processing, 175–179.	Kitaev, A. Y. (1995). Quantum measurements and the Abelian stabilizer problem. arXiv preprint quant-ph/9511026.
Citi nosaukumi	BB84, quantum cryptography	QPE, phase kickback
Saistītās	2	3
Kopsavilkums	Quantum Key Distribution (QKD) BB84 is a cryptographic protocol allowing two parties to establish a shared secret key using quantum mechanics. Proposed by Bennett and Brassard in 1984, BB84 provides information-theoretic security: an eavesdropper's presence is guaranteed to be detected, and the secret key is provably secure against unlimited computational power.	Quantum Phase Estimation (QPE) is a fundamental quantum subroutine that estimates the eigenvalues of a unitary operator. Developed by Alexei Kitaev in 1995, QPE combines controlled unitary evolution with the quantum Fourier transform to extract eigenvalues from quantum states with exponential precision scaling.