Example Concept: Quantum noise arises from interactions between qubits and their environment, causing decoherence and gate errors. These errors can be modeled using noise channels like depolarizing, dephasing, and amplitude damping. Quantum error correction techniques, such as the surface code or Shor's code, are employed to detect and correct these errors, thereby improving the fidelity of quantum algorithms. Additionally, noise-aware circuit design and error mitigation strategies, such as zero-noise extrapolation, help in reducing the impact of noise on quantum computations.