By Andre Saraiva, Diraq
The most jaw-dropping applications for quantum computers require trillions or more operations on qubits . But even the best engineering on top of the best error mitigation strategies will only give you a thousand or so operations before all the quantum “goodness” of your computer is gone. The only solution to this conundrum is to sacrifice several qubits to form one large cluster that cooperates to protect the quantum information better. This collective entity is called a logical qubit.