Researchers at Islamic Azad University have unveiled new parity-preserving reversible multipliers that significantly cut costs and improve error detection in quantum circuits. This breakthrough is a major step towards making quantum computing more efficient and reliable. The findings were published in Frontiers of Computer Science.

The research team introduced six new parity-preserving reversible blocks (Z, F, A, T, S, and L), achieving an average quantum cost reduction of 25.04% for 4-bit unsigned multipliers and 18.59% for 5-bit signed multipliers. These blocks ensure parity in both input and output, which aids in error detection and correction.

Key Improvements:

•  4-bit Unsigned Multipliers: Achieved a 25.04% reduction in quantum cost, a 51.03% reduction in gate count, a 20.89% reduction in garbage output, and a 21.17% reduction in constant input, enhancing overall efficiency.

•  5-bit Signed Multipliers: Realized an 18.59% reduction in quantum cost, a 27.65% reduction in gate count, and a 13.82% reduction in garbage output and constant input, improving efficiency and reducing unnecessary data.

Quantum computing faces challenges such as power dissipation and high error rates. Dr. Mojtaba Noorallahzadeh and his team tackled these issues by focusing on reversible computing principles, making their designs more efficient and fault-tolerant.

By enhancing error detection and reducing costs, this research supports the advancement of more sophisticated and dependable quantum computing technologies.

This collaborative effort between Islamic Azad University, the German Research Center for Artificial Intelligence (DFKI), and the University of Bremen offers a fresh perspective on quantum circuit design.