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How do noise mitigation techniques impact quantum circuit fidelity?
Asked on Jan 17, 2026
Answer
Noise mitigation techniques are crucial in enhancing the fidelity of quantum circuits by reducing errors that occur due to decoherence and other noise sources. These techniques, such as error correction codes, dynamical decoupling, and noise-aware transpilation, help maintain the integrity of quantum information throughout computation.
Example Concept: Noise mitigation techniques like quantum error correction and dynamical decoupling are designed to counteract the effects of noise in quantum circuits. Quantum error correction uses redundancy to detect and correct errors without measuring the quantum state directly, while dynamical decoupling involves applying sequences of pulses to refocus qubit states and cancel out noise effects. These methods improve circuit fidelity by preserving quantum coherence and reducing error rates.
Additional Comment:
- Quantum error correction requires additional qubits, which can increase resource demands.
- Dynamical decoupling is effective for certain types of noise, particularly low-frequency noise.
- Noise-aware transpilation optimizes circuit layout to minimize the impact of known noise characteristics.
- Combining multiple noise mitigation strategies can lead to better overall performance.
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