Analytic gradients in variational quantum algorithms: Algebraic extensions of the parameter-shift rule to general unitary transformations

Optimization of unitary transformations in Variational Quantum Algorithms benefits highly from efficient evaluation of cost function gradients with respect to amplitudes of unitary generators. We propose several extensions of the parametric-shift-rule to formulating these gradients as linear combina...

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Vydané v:	arXiv.org
Hlavní autori:	Izmaylov, Artur F, Lang, Robert A, Yen, Tzu-Ching
Médium:	Paper
Jazyk:	English
Vydavateľské údaje:	Ithaca Cornell University Library, arXiv.org 19.12.2021
Predmet:	Algorithms Cost function Decomposition Eigenvalues Generators Mathematical analysis Operators Optimization Polynomials Qubits (quantum computing) Spectrum analysis Transformations (mathematics)
ISSN:	2331-8422
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