Do you really need 10000 physical qubits?

People often say it takes ten thousand physical qubits to make one logical qubit. That number is only a rough guide. The real answer depends on the architecture, the application, and the kinds of imperfections in the hardware.

Different architectures give different fault-tolerance thresholds. Different applications demand different gate counts. And each type of error pushes the requirements further.

This carousel walks through how those factors interact, and why the only way to know the overhead is through simulation👇