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Pulse based Variational Quantum Optimal Control for hybrid quantum computing by Robert de Keijzer; Oliver Tse; Servaas Kokkelmans is a Computer Science article available to read on EtoBox.

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This work studies pulse based variational quantum algorithms (VQAs), which are designed to determine the ground state of a quantum mechanical system by combining classical and quantum hardware. In contrast to more standard gate based methods, pulse based methods aim to directly optimize the laser pulses interacting with the qubits, instead of using some parametrized gate based circuit. Using the mathematical formalism of optimal control, these laser pulses are optimized. This method has been used in quantum computing to optimize pulses for quantum gate implementations, but has only recently been proposed for full optimization in VQAs. Pulse based methods have several advantages over gate based methods such as faster state preparation, simpler implementation and more freedom in moving through the state space. Based on these ideas, we present the development of a novel adjoint based variational method. This method can be tailored towards and applied in neutral atom quantum computers. This method of pulse based variational quantum optimal control is able to approximate molecular ground states of simple molecules up to chemical accuracy and is able to compete with the gate based variat

Who reads Pulse based Variational Quantum Optimal Control for hybrid quantum computing?

Author

Robert de Keijzer; Oliver Tse; Servaas Kokkelmans

Publisher

Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften

Published

2023

Language

EN

Field

Computer Science (Physical Sciences)