What is Quantum Computing?

Quantum Computing is a computing paradigm that uses quantum mechanical phenomena—such as superposition, entanglement, and interference—to process information. Instead of classical bits (0 or 1), quantum computers use quantum bits or qubits, which can exist in multiple states simultaneously.

Key points:

• Quantum algorithms can, for certain tasks, offer exponential or polynomial speedups over classical algorithms (e.g. Shor’s algorithm for factoring, Grover’s search algorithm).
• Quantum computing is still largely experimental, with challenges in error correction, coherence time, and scalable qubit architectures.
• Potential applications include cryptography, materials science, optimization, and simulation of quantum systems.