Nonstabilizerness and Error Resilience in Noisy Quantum Circuits

• URL: http://arxiv.org/abs/2506.18976v1
• Date: Mon, 23 Jun 2025 18:00:01 GMT
• Title: Nonstabilizerness and Error Resilience in Noisy Quantum Circuits
• Authors: Fabian Ballar Trigueros, José Antonio Marín Guzmán,
• Abstract summary: We show that amplitude damping, a nonunital channel, can generate or enhance magic, whereas depolarizing noise provably cannot.<n>Our results point toward the possibility of leveraging, rather than merely mitigating, noise for quantum information processing.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We investigate how noise impacts nonstabilizerness - a key resource for quantum advantage - in many-body qubit systems. While noise typically degrades quantum resources, we show that amplitude damping, a nonunital channel, can generate or enhance magic, whereas depolarizing noise provably cannot. In an encoding-decoding protocol, we find that, unlike in the coherent case, a sharp decoding fidelity transition does not match a transition in nonstabilizerness. Our results point toward the possibility of leveraging, rather than merely mitigating, noise for quantum information processing.

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