Quantum · Reference
Quantum Explained
The hardware, the maths and the security race, from the labs to the standards.
20 topics · continually updated
IBM Quantum
the roadmap everyone is measured against
Google Quantum AI
Willow and verifiable advantage
Quantinuum
highest fidelities, newly public
IonQ
the revenue leader among the pure plays
Rigetti
vertically integrated and thinly capitalised
D-Wave
annealing, and the argument about what counts
IQM
Europe's listed champion
PsiQuantum
the all-or-nothing photonic bet
Microsoft Quantum
topological qubits and the Azure reseller model
AWS Braket and the Ocelot cat-qubit chip
Neutral atoms
QuEra and Atom Computing
Pasqal and the European neutral-atom programme
Xanadu and photonic quantum computing
NVIDIA in quantum
NVQLink, CUDA-Q and the Ising decoder
Quantum error correction explained
Post-quantum cryptography
the standards and the deadlines
Harvest now, decrypt later
the migration business
US quantum policy
two executive orders and the federal purse
China's quantum programme
Investing in quantum
the sector, the selloff and what to watch