Core Viewpoint - The 2025 ACM A.M. Turing Award is awarded to Charles H. Bennett and Gilles Brassard for their foundational contributions to quantum information science and transformative roles in secure communication and computation [1][3]. Group 1: Award Significance - The ACM A.M. Turing Award, often referred to as the "Nobel Prize of Computing," carries a prize of $1 million funded by Google [3]. - Bennett and Brassard are recognized as pioneers in quantum information science, a field that intersects physics and computer science, utilizing quantum mechanics for information processing and transmission [4]. Group 2: Contributions to Quantum Cryptography - In 1984, Bennett and Brassard proposed the first practical quantum cryptography protocol, known as the BB84 protocol, which ensures secure key distribution based on physical laws, even against adversaries with unlimited computational power [4][5]. - The BB84 protocol does not rely on computational assumptions, achieving information-theoretic security by leveraging the fundamental properties of quantum information, which cannot be copied or measured without disturbance [5]. Group 3: Impact on Computing Theory - Their work has reshaped the theoretical foundations of computation, including the demonstration of quantum teleportation and entanglement distillation, which are crucial for scalable quantum communication [6]. - Bennett and Brassard's collaboration has bridged the gap between physics and computer science, influencing various fields such as cryptography, algorithm design, and computational complexity [6]. Group 4: Future of Quantum Information Science - The future of quantum information science includes exploring fault-tolerant quantum computers, new quantum algorithms, and long-distance quantum communication supported by satellites and quantum repeaters [11]. - Their insights continue to impact both foundational research and practical innovations in the rapidly evolving field of quantum technology [11].