A quantum circuit simulator and its applications on Sunway TaihuLight supercomputer

Area of Science:

• Quantum Computing
• High-Performance Computing

Background:

• Classical simulation of quantum computation is crucial for validating quantum hardware and evaluating quantum algorithms.
• Existing simulators often lack versatility and efficiency for large-scale quantum circuit analysis.

Purpose of the Study:

• To introduce a novel, versatile, and highly efficient quantum circuit simulator.
• To demonstrate its capabilities on the Sunway TaihuLight supercomputer.
• To showcase its application in solving complex quantum problems.

Main Methods:

• Developed a simulator with three independent modules for full, partial, and single-amplitude computation.
• Implemented a two-level parallel structure optimized for distributed many-core architectures.
• Incorporated noise emulation and support for diverse quantum operations.

Main Results:

• Achieved simulation of random quantum circuits with up to 40, 75, and 200 qubits for full, partial, and single amplitudes, respectively.
• Demonstrated high efficiency through a specialized parallel design.
• Successfully applied the simulator to a quantum fast Poisson solver and a quantum arithmetic algorithm for transcendental functions.

Conclusions:

• The new simulator offers enhanced versatility and efficiency for classical quantum computation simulation.
• It provides a powerful platform for the development and testing of advanced quantum algorithms.
• Expected to broaden applications in various scientific and computational fields.