An efficient quantum circuits optimizing scheme compared with QISKit

Understand

Recently, the development of quantum chips has made great progress-- the number of qubits is increasing and the fidelity is getting higher.

• However, qubits of these chips are not always fully connected, which sets additional barriers for implementing quantum algorithms and programming quantum programs.
• In this paper, we introduce a general circuit optimizing scheme, which can efficiently adjust and optimize quantum circuits according to arbitrary given qubits' layout by adding additional quantum gates, exchanging qubits and merging single-qubit gates.
• Compared with the optimizing algorithm of IBM's QISKit, the quantum gates consumed by our scheme is 74.7%, and the execution time is only 12.9% on average.