Salīdzināt metodes

	Kvantitatīvā fāzes novērtēšana	Variācijas kvantu eigensektors
Nozare	Kvantu skaitļošana	Kvantu skaitļošana
Saime	Machine learning	Machine learning
Izcelsmes gads	1995	2014
Autors	Alexei Kitaev	Alberto Peruzzo
Tips	Subroutine algorithm	Hybrid quantum-classical algorithm
Pirmavots	Kitaev, A. Y. (1995). Quantum measurements and the Abelian stabilizer problem. arXiv preprint quant-ph/9511026.	Peruzzo, A., McClean, J., Shadbolt, P., et al. (2014). A variational eigenvalue solver on a photonic quantum processor. Nature Communications, 5, 4213.
Citi nosaukumi	QPE, phase kickback	VQE, hybrid quantum-classical
Saistītās	3	4
Kopsavilkums	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.	The Variational Quantum Eigensolver (VQE) is a hybrid quantum-classical algorithm designed to find the lowest eigenvalue (ground state energy) of a quantum Hamiltonian. Introduced by Peruzzo et al. in 2014, it exploits the variational principle to combine the power of quantum circuits with classical optimization to solve chemistry and materials science problems on near-term quantum devices.