Quantum Circuit Simulator based on FPGA

The quantum computer is emerging technology since it can resolve complex tasks such as factorization or search problem faster than classical computers. However, simulation of the quantum computer is difficult because computational load increases exponentially as the number of qubits used in the circuit is increased. This paper proposes a hardware architecture for quantum circuit simulation. To implement simulator smaller, our architecture operates based on a 1-input single gate regardless of the number of qubits used in the circuit In addition, our architecture helps to reduce simulation time by skipping calculation and data transfer. The proposed architecture is implemented on FPGA and the experimental results show that our architecture reduces 79.2% of the multiplication process when we simulate 20-qubit quantum Fourier transform with a small hardware size.