What is Quantum Computing?

Quantum computing is a rapidly-emerging technology that harnesses the laws of quantum mechanics to solve problems too complex for classical supercomputers. ### Classical Bits vs. Quantum Bits - **Classical bit**: Can represent either 0 or 1. - **Qubit (Quantum bit)**: Can represent 0, 1, or any linear combination of both thanks to **superposition**. ### Why Does It Matter? While a classical computer processes inputs sequentially, a quantum computer with $N$ qubits can exist in a superposition of $2^N$ states simultaneously. This enables exponential parallel exploration of solution spaces for algorithms like Shor's factoring and Grover's search.