Engineering dissipation and control pulses for high-fidelity fault-tolerance quantum computing
Abstract
Cat-state qubits, a prominent class of bosonic encodings, offer a promising pathway toward hardware-efficient fault-tolerant quantum computing. In this manuscript, we propose an optimally robust control protocol for the cat-state qubits which are stabilized by engineering two-photon dissipation. By deriving an effective two-level description in the cat-state subspace and applying shortcut-to-adiabaticity via inverse engineering, we design a robust protocol to achieve fast and high-fidelity state transfer in the cat-state qubit. We analyze the sensitivity to systematic control errors and identify an optimal robustness condition that strongly suppresses errors induced by imperfections in the driving fields. Furthermore, we show that dissipative confinement efficiently suppresses leakage out of the cat-state subspace caused by the pure dephasing, highlighting an intrinsic advantage of dissipative-cat qubits. This work establishes a robust and leakage-suppressing framework for high-fidelity bosonic qubit control, offering a promising route toward scalable fault-tolerant quantum computing.
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BibTeX
@misc{xu2026engineering,
title = {{Engineering dissipation and control pulses for high-fidelity fault-tolerance quantum computing}},
author = {Shao-Wei Xu and Zhe-Yuan Zhang and Yi-Tong Shi and Ye-Hong Chen and Yan Xia},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.15477},
eprint = {2609.15477},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.15477},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Engineering dissipation and control pulses for high-fidelity fault-tolerance quantum computing
AU - Shao-Wei Xu
AU - Zhe-Yuan Zhang
AU - Yi-Tong Shi
AU - Ye-Hong Chen
AU - Yan Xia
PY - 2026
DA - 2026/09/14
PB - arXiv
DO - 10.48550/arxiv.2609.15477
UR - https://arxiv.org/abs/2609.15477
AB - Cat-state qubits, a prominent class of bosonic encodings, offer a promising pathway toward hardware-efficient fault-tolerant quantum computing. In this manuscript, we propose an optimally robust control protocol for the cat-state qubits which are stabilized by engineering two-photon dissipation. By deriving an effective two-level description in the cat-state subspace and applying shortcut-to-adiabaticity via inverse engineering, we design a robust protocol to achieve fast and high-fidelity state transfer in the cat-state qubit. We analyze the sensitivity to systematic control errors and identify an optimal robustness condition that strongly suppresses errors induced by imperfections in the driving fields. Furthermore, we show that dissipative confinement efficiently suppresses leakage out of the cat-state subspace caused by the pure dephasing, highlighting an intrinsic advantage of dissipative-cat qubits. This work establishes a robust and leakage-suppressing framework for high-fidelity bosonic qubit control, offering a promising route toward scalable fault-tolerant quantum computing.
ER -