Quantum Computing

A quantum computer stores information in qubits, which can be in superpositions of 0 and 1. Learn how qubits are described by amplitudes, how gates rotate and reflect them, how interference makes wrong answers cancel, why entanglement makes quantum states so hard to simulate, what Grover's and Shor's algorithms really promise, how quantum physics catches eavesdroppers, and how fragile qubits are protected from errors.