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As of January 2023, the largest commercial quantum computer is IBM’s Osprey with 433 physical qubits [138]. However, its predecessor, IBM’s Eagle quantum processor, released in 2021, had 127 qubits [13] and IBM has a 1,121-qubit quantum processor Condor on their roadmap for 2023 [107]. Although one has to differentiate between physical and logical qubits (the latter being harder to realize), one has to state that if the number of qubits continues to grow like this, quantum computers might indeed pose a problem for public-key cryptography in the future.