PostQuantum - Quantum Computing, Quantum Security, PQC

Eight G7 central banks have published their first joint quantum report, expanding the conversation beyond PQC migration to address quantum computing applications, sensing risks, and system-level dependencies across the financial sector ...

Pan Jian-Wei's team published a rigorous Nature paper showing an order-of-magnitude leap in photonic quantum scale. The engineering is impressive. The "quantum supremacy" framing from state media is a different matter entirely ...

NIST just narrowed 14 post-quantum signature candidates to nine. The survivors span four distinct mathematical families, from isogeny-based compact signatures to multivariate schemes under active cryptanalytic fire. Here's what each candidate is, why NIST kept it, and what this means for your PQC migration planning ...

India's finalized quantum-safe roadmap adds Preferential Market Access mandates, a detailed four-level certification framework, and sector-specific technology guidance. The timelines hold — but the execution gap just got harder to ignore ...

A Caltech–UCSD team has constructed a 3D quantum system that can store a qubit for exponential time without active error correction. The result settles a question that has resisted the field's best efforts for a quarter century ...

A Seoul National University paper arguing lattice-based cryptography has "fundamental limitations" is generating alarming headlines. The theoretical points are valid but well-known. What the paper actually demonstrates is why PQC migration should accelerate, not stall ...

CAS Cold Atom Technology's Hanyuan-2 uses two rubidium isotope arrays and calls itself the world's first dual-core quantum computer. The framing is clever. The missing performance data tells a different story ...

Cisco’s research prototype can route quantum information across encoding modalities at room temperature on standard telecom fiber ...

IonQ's CEO told investors the company will reach the logical qubit count to "challenge RSA-2048" by 2028–2029. That's not the same as breaking encryption, and the Q-FUD machine is already running at full speed ...

Two days after pseudoscience was pitched from Bitcoin's biggest stage to deny the quantum threat, Project Eleven published 110 pages of rigorous analysis showing exactly why that denial is dangerous ...

QuantWare's $178M Series B is the largest private round ever raised by a dedicated quantum processor company. With Intel Capital and IQT on board, the bet is clear: the quantum industry's future is modular, open, and manufactured at scale ...

Q-CTRL's 120-qubit simulation of the Fermi-Hubbard model achieves quantitative accuracy matching classical benchmarks while completing in minutes rather than days. The "practical quantum advantage" claim deserves scrutiny, but the underlying technical achievement is real ...