Quantum Briefing June 2026

Published on
June 25, 2026
Authors
Dr. Michele Mosca
Dr. Michele Mosca
CEO & Co-founder
Dr. Marco Piani
Dr. Marco Piani
Senior Research Analyst

Newly published research papers have significantly lowered the estimated resources needed to break today's most widely used public-key cryptography, including elliptic curve cryptography and RSA. The development is significant enough that Google has already responded by expanding its quantum hardware roadmap to include neutral-atom architectures and moving up its internal target for post-quantum migration to 2029.

Our latest Quantum Briefing, produced in collaboration with the Global Risk Institute, unpacks what these breakthroughs mean for organizations planning their transition to quantum-safe cryptography. The briefing examines the technical basis for the new resource estimates, situates them alongside Google's strategic shifts, and considers how advances in AI, including NVIDIA's new open models for quantum error correction, may further accelerate the pace of progress.

While none of these developments warrant panic, they do call for a more aggressive posture on cryptographic resilience. The briefing highlights that digital signatures and authentication represent a priority risk distinct from "Harvest Now, Decrypt Later" attacks, since their compromise could enable immediate fraud rather than future decryption. Organizations should treat cryptographic inventory, crypto-agility, and post-quantum migration planning as immediate priorities.

Quantum Briefing June 2026Quantum Briefing June 2026
Quantum Briefing June 2026
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