A working machine you can fly, a qubit you can dive into, and the whole race —
the machines, the roadmap, the cryptography cliff, and Bitcoin's countdown.
Drag to orbit · scroll to zoom · pull the DIVE slider to fall nine orders of magnitude.
From a 1980 thought experiment to machines that beat error correction. Filter the timeline, then watch the qubit count climb.
Today's quantum computers run on five very different kinds of qubit. More qubits isn't better — fidelity is. Here's the whole field.
Raw qubits are noisy. The real race is error correction — bundling thousands of physical qubits into a few reliable logical ones. Here are the roadmaps, the projection, and the walls in the way.
A big enough quantum computer breaks the public-key crypto behind almost all secure traffic. The fix (post-quantum cryptography) is standardised and rolling out — but unevenly. "Harvest now, decrypt later" means the clock already started.
Bitcoin's signatures use the same elliptic-curve crypto a quantum computer could break. Two lines are racing: quantum capability rising, and Bitcoin's defences scrambling. Whoever crosses first decides whether ~$ trillions are safe.