Researchers at Waseda University in Japan have introduced a new quantum algorithm meant to simplify problem-solving across various domains.
Tackling the limitations of conventional quantum algorithms in solving combinatorial optimization problems (COPs) with constraints, the team introduced the post-processing variationally scheduled quantum algorithm (pVSQA).
Published in the IEEE Transactions on Quantum Engineering, the study by Assistant Professor Tatsuhiko Shirai and Professor Nozomu Togawa introduces an innovative approach combining variational scheduling with post-processing techniques. This fusion enables the derivation of high-quality solutions to COPs within the operational constraints of quantum computers.
READ:
Workshop on Quantum Computing to introduce concepts and programming
NVIDIA unveils cloud service for quantum-computer simulation
“Efficiently solving combinatorial optimization problems is at the heart of achieving these transformations,” said Dr. Shirai. “Our new method will play a significant role in realizing these long-term social transformations.”
pVSQA algorithm
Combinatorial optimization problems, widely used in logistics, supply chain management, and drug discovery, need computationally intensive solutions. While classical computers struggle with COPs, quantum computers harness the power of superposition to swiftly navigate through complex scenarios. However, constraints in COPs pose a challenge for traditional quantum algorithms like adiabatic quantum annealing.
The pVSQA algorithm leverages quantum computation to generate variational quantum states, subsequently employing post-processing methods to transform impracticable solutions into viable ones. By iteratively refining the probability distribution function, the algorithm converges upon near-optimal solutions.
Dr. Shirai underscores the algorithm’s societal implications, emphasizing its potential role in addressing pressing global issues like climate change and sustainable development. The algorithm’s performance, evaluated through simulations and real quantum devices, showcases its superiority over conventional approaches, promising breakthroughs in diverse fields.
The advent of pVSQA marks a significant stride in quantum computing, heralding a new era of efficient problem-solving with far-reaching implications for industries and societies worldwide.