IBM Research Advances Towards Quantum Advantage

This technical report discusses IBM's recent research on quantum advantage, a critical milestone in quantum computing where quantum computers outperform classical ones. The report outlines how IBM utilized error mitigation techniques to enhance quantum performance, achieving significant results with large quantum circuits. It identifies three key challenges in quantum computing: managing quantum noise, scaling qubits, and increasing processor speed. The report highlights IBM's historical efforts in quantum error correction and presents new theories suggesting that quantum advantage can be achieved without fault tolerance through error mitigation. The research involved collaboration with the University of California, Berkeley, and demonstrated that quantum processors can deliver more accurate results than classical methods in certain scenarios. The report concludes with IBM's roadmap for future research, emphasizing the importance of error mitigation in bridging the gap to fault-tolerant quantum computing, which could enable a wide range of applications in various fields.