As of my last knowledge update in January 2022, large-scale, fault-tolerant quantum computers capable of breaking widely used cryptographic algorithms have yet to be realized.1
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References
1Mahmoud M. The Involvement of Quantum Computing in the Realm of Cybersecurity. In: 2023 International Conference on Computational Science and Computational Intelligence (CSCI). IEEE; 2023:881-886. doi:10.1109/CSCI62032.2023.00147