Abstract
Along with the recent development of quantum computers, quantum computer simulators are also exploited to verify and evaluate quantum computers. Since the amount of computation in the quantum circuit simulations increases exponentially with the number of qubits, which indicates the size of the quantum computer, it is important to study the performance of the quantum circuit simulations. In this paper, we analyze the performance of a state vector quantum circuit simulation on A64FX processor. We consider the implementation with the optimization control lines (OCLs), and that written with the Arm C Language Extensions (ACLE) to enhance vectorization, and compare them with the original implementation. Our experiments show that the vectorization improves the performance if the quantum gate simulations involve floating-point arithmetic operations.
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