PreprintCC BY 4.0arXiv
Preparation Changes the Cost of Calibration for Quantum Control
Abstract
Error-correction records can reveal noise yet supply the information needed for control too slowly. In a surface code under Gaussian dephasing, encoded calibration learns a correlation that reverses the preferred control mainly through rare events. A product probe exposes it more often through the same checks, reducing ideal-record sample complexity from inverse-square to inverse-linear in phase variance. Counting both calibration and execution costs, we show that this gain can repay probe overhead and enable protected tasks within budgets that exclude encoded calibration.
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BibTeX
@misc{deng2026preparation,
title = {{Preparation Changes the Cost of Calibration for Quantum Control}},
author = {Xiu-Hao Deng},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.30910},
eprint = {2609.30910},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.30910},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Preparation Changes the Cost of Calibration for Quantum Control
AU - Xiu-Hao Deng
PY - 2026
DA - 2026/09/25
PB - arXiv
DO - 10.48550/arxiv.2609.30910
UR - https://arxiv.org/abs/2609.30910
AB - Error-correction records can reveal noise yet supply the information needed for control too slowly. In a surface code under Gaussian dephasing, encoded calibration learns a correlation that reverses the preferred control mainly through rare events. A product probe exposes it more often through the same checks, reducing ideal-record sample complexity from inverse-square to inverse-linear in phase variance. Counting both calibration and execution costs, we show that this gain can repay probe overhead and enable protected tasks within budgets that exclude encoded calibration.
ER -