← Back to Glossary

Superposition

Beginner Quantum Mechanics ⭐ Featured
A quantum state where a qubit exists in multiple basis states simultaneously until measured.

📖 In-Depth Explanation

Unlike classical bits that are definitely 0 or 1, a qubit in superposition is described by amplitudes for both states. This is not uncertainty about a hidden state—the qubit genuinely exists in both states until measurement.