Quantum Computing: Principles & Applications

Published in Aevum Encyclopedia • Peer-Reviewed • 2025

Quantum computing represents a fundamental shift in computational paradigms, leveraging the principles of quantum mechanics to process information in ways classical computers cannot. Unlike classical bits, which exist in states of 0 or 1, quantum bits (qubits) utilize superposition to represent multiple states simultaneously.

Core Mechanisms

The computational power of quantum systems arises from two primary phenomena: superposition and entanglement. Superposition allows qubits to exist in a combination of states, enabling parallel processing at scale. Entanglement creates correlations between qubits such that the state of one instantly influences another, regardless of distance.

Recent advancements in error correction and decoherence mitigation have pushed quantum processors beyond the 1,000-qubit threshold, marking a transitional phase from experimental physics to practical engineering.