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Google's Quantum Echoes Algorithm: 13,000 Times Faster, But Practical Use Years Away

4/18/2026

Summary

Story summary

Google announced a quantum algorithm called "quantum echoes" that outperforms classical computers in computing molecular structures, claiming it runs 13,000 times faster.
Experts caution that practical applications are years away because fully functional quantum computers may require millions of qubits.
Google’s vice-president Hartmut Neven predicts real-world applications could emerge within five years.
The progress raises cybersecurity concerns because quantum computers may crack high-level encryption, prompting calls for quantum-proof cryptography.

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Story summary

Google announced a quantum algorithm called "quantum echoes" that outperforms classical computers in computing molecular structures, claiming it runs 13,000 times faster.
Experts caution that practical applications are years away because fully functional quantum computers may require millions of qubits.
Google’s vice-president Hartmut Neven predicts real-world applications could emerge within five years.
The progress raises cybersecurity concerns because quantum computers may crack high-level encryption, prompting calls for quantum-proof cryptography.