Analytic gradients in variational quantum algorithms: Algebraic extensions of the parameter-shift rule to general unitary transformations
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DOI: 10.1103/physreva.104.062443
Abstract: 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… read more here.
Keywords: shift rule; variational quantum; unitary transformations;
Robust Learning Control Design for Quantum Unitary Transformations
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DOI: 10.1109/tcyb.2016.2610979
Abstract: Robust control design for quantum unitary transformations has been recognized as a fundamental and challenging task in the development of quantum information processing due to unavoidable decoherence or operational errors in the experimental implementation of… read more here.
Keywords: control design; quantum; unitary transformations; quantum unitary ... See more keywords