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Dissipation-induced continuous quantum error correction for superconducting circuits

zqyin 添加于 2014-9-25 09:44 | 1231 次阅读 | 0 个评论

作者
Cohen J, Mirrahimi M
摘要
Quantum error correction (QEC) is a crucial step towards long coherence times required for efficient quantum information processing (QIP). One major challenge in this direction concerns the fast real-time analysis of error syndrome measurements and the associated feedback control. Recent proposals on autonomous QEC (AQEC) have opened new perspectives to overcome this difficulty. Here, we design an AQEC scheme based on quantum reservoir engineering adapted to superconducting qubits. We focus on a three-qubit bit-flip code, where three transmon qubits are dispersively coupled to a few low-Q resonator modes. By applying only continuous-wave drives of fixed but well-chosen frequencies and amplitudes, we engineer an effective interaction Hamiltonian to evacuate the entropy created by eventual bit-flip errors. We provide a full analytical and numerical study of the protocol, while introducing the main limitations on the achievable error correction rates.
详细资料
- 关键词: quant-ph; cond-mat.mes-hall; cond-mat.supr-con
- 文献种类: Manual Script
- 期卷页: 2014年
- 日期: 2014-9-24
- 发布方式: arXiv e-prints
- 备注:arXiv:1409.6759v1; 9 pages, 6 figures
学科领域自然科学 » 物理学
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