Core argument: Quantum computers capable of breaking current encryption standards are moving from theoretical possibility to engineering reality within the next decade.
For 30 years, Shor’s algorithm has been a security threat in theory only. Physicists initially estimated that they would need a colossal quantum machine with billions of qubits — the elements used in quantum calculations — to run it. That estimate has come down drastically over the years, falling recently to a million qubits. But it has still always sat comfortably beyond the modest capabilities of existing quantum computers, which typically have just hundreds of qubits. However, two different groups of researchers have just announced advances that notably reduce the gap between theoretical estimates and real machines. A star-studded team of quantum physicists at the California Institute of Technology went public with a design for a quantum computer that could break encryption with only tens of thousands of qubits and said that it had formed a company to build the machine. And researchers at Google announced that they had developed an implementation of Shor’s algorithm that is ten times as efficient as the best previous method.New Advances Bring the Era of Quantum Computers Closer Than Ever
AI Summary. Advances in quantum computing have reduced the number of processing units needed to break modern encryption from millions to tens of thousands, while a separate improvement has made the underlying calculation ten times more efficient.
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Two separate breakthroughs at Google and CalTech suggest the ability to run Shor’s algorithm, which would break the vast majority of current encryption, is a few years away. Google is planning on migrating to post-quantum cryptography by 2029.

Takeaways by Macro Roundup® AI
- Quantum computers capable of breaking current encryption standards are moving from theoretical possibility to engineering reality within the next decade.
- Dramatic improvements in efficiency and qubit requirements create immediate pressure for organizations to begin transitioning to quantum-resistant security systems.
- Competition between major technology companies and research institutions is accelerating practical quantum computing development faster than previous estimates suggested.


