Measurement & Collapse

In quantum computing, a qubit can exist in a superposition of states |0⟩ and |1⟩. When a measurement is performed, the superposition collapses to one definite state. The probability of collapsing to |0⟩ or |1⟩ depends on the amplitudes of the quantum state. This process, called wavefunction collapse, is fundamental to how quantum information is extracted.