no one had successfully demonstrated Shor's algorithm with a large-scale, fault-tolerant quantum computer. Shor's algorithm is a quantum algorithm known for its ability to efficiently factor large numbers, which has significant implications for breaking modern cryptographic systems based on the difficulty of factoring large numbers.
However, since then, there have been advancements in quantum computing, and it is possible that progress has been made in demonstrating the use of Shor's algorithm with a working quantum computer. It's important to note that building a practical, fault-tolerant quantum computer is a complex and challenging task, and researchers are still working on overcoming various technical hurdles to achieve this goal.
To stay updated on the latest advancements in the field of quantum computing, I recommend referring to scientific publications, news articles, and official announcements from research institutions and companies involved in quantum computing research.