# Engineering the Cost Function of a Variational Quantum Algorithm for Implementation on Near-Term Devices

@article{Premaratne2020EngineeringTC, title={Engineering the Cost Function of a Variational Quantum Algorithm for Implementation on Near-Term Devices}, author={Shavindra P. Premaratne and Anne Y. Matsuura}, journal={arXiv: Quantum Physics}, year={2020} }

Variational hybrid quantum-classical algorithms are some of the most promising workloads for near-term quantum computers without error correction. The aim of these variational algorithms is to guide the quantum system to a target state that minimizes a cost function, by varying certain parameters in a quantum circuit. This paper proposes a new approach for engineering cost functions to improve the performance of a certain class of these variational algorithms on today's small qubit systems. We…

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