Compară metode

	Estimarea Fazelor Cuantice	Variational Quantum Eigensolver
Domeniu	Calcul cuantic	Calcul cuantic
Familie	Machine learning	Machine learning
Anul apariției	1995	2014
Autorul original	Alexei Kitaev	Alberto Peruzzo
Tip	Subroutine algorithm	Hybrid quantum-classical algorithm
Sursa seminală	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.
Denumiri alternative	QPE, phase kickback	VQE, hybrid quantum-classical
Înrudite	3	4
Rezumat	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.