Google's research suggests that quantum computers could break widely used RSA encryption sooner than previously thought, with a 2,048-bit RSA encryption key estimated to be crackable in less than a week by a quantum computer with fewer than one million noisy qubits.
Advances in quantum algorithms and error correction methods have contributed to this reduction in required qubits, making the transition to quantum-resistant security measures more urgent than before.
Despite the theoretical advancements, the current quantum computers available, such as IBM's Condor and Google's Sycamore, fall significantly short of the required million-qubit scale described in the study.
The study underlines the need for a shift to post-quantum cryptography to safeguard secure communications, as the hardware capabilities necessary for breaking RSA encryption are expected to be achieved within the next decade by major quantum hardware companies.