Quantum Computing: Explained Simply
Qubits, superposition, and quantum supremacy — a plain-English guide to the technology that could change everything.
Quantum Computing: Explained Simply
Quantum computing sounds impossibly complex. But the core ideas can be understood without a physics degree.
Classical vs Quantum
Classical computers use bits — 0 or 1. Every computation is built from these binary choices.
Quantum computers use qubits — which can be 0, 1, or both at the same time (superposition). When multiple qubits are connected (entanglement), they can process vast numbers of possibilities simultaneously.
Why It Matters
Some problems are practically impossible for classical computers:
Quantum computers can potentially solve these in hours or minutes.
Key Concepts
Superposition
A qubit can exist in multiple states simultaneously. Think of flipping a coin — while it's in the air, it's both heads and tails.
Entanglement
When two qubits are entangled, the state of one instantly affects the other, regardless of distance. This enables parallel processing at a massive scale.
Quantum Supremacy
The point where a quantum computer solves a problem that no classical computer can solve in a reasonable time. Google claimed this in 2019.