Practical Fidelity Estimation for Noisy Quantum Devices Using Direct and Survival-Probability-Based Protocols
A new arXiv preprint introduces two software-oriented fidelity estimation protocols for noisy quantum devices, intended to avoid the exponential cost of full quantum state or process tomography. One protocol is direct and the other is based on survival probabilities. The abstract positions them as practical tools for characterizing quantum states and processes as system sizes grow.
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What this could mean
- 0–2 yearsPlausible
The survival-probability protocol could become a lightweight benchmark in calibration loops for near-term noisy processors, replacing more expensive tomography-based checks during device bring-up.
Because it is software-oriented and avoids full tomography, it can be implemented on existing devices without extra hardware; if it holds up under independent validation, cloud quantum platforms could adopt it for routine characterization.
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