Quantinuum Helios: Why Quantum Errors Matter More Than Qubits

You think the quantum race is about qubits. It's about mistakes, and someone just hit five in a million.

Quantinuum says its Helios machine got 99.9995% of its operations right. Five slips in a million.

Here's the trick. One qubit is fragile, so engineers bundle many into one sturdy qubit, called a logical qubit. Think of a team checking each other's homework. Here, up to 37 real qubits back up every one.

They also say they beat Google by 100 times. Careful. That's two runners on different tracks, so it isn't a fair race yet.

Still, their own errors dropped tenfold since September. Fewer mistakes is how a machine finishes a long calculation without falling apart.

Send this to the friend who ranks quantum computers by qubit count. Follow for the next number that actually matters.

In quantum, the winner isn't the biggest machine. It's the one with the fewest mistakes.