带有超导量子位的图形状态稳定器的分散动力学
Liran Shirizly1, Grégoire Misguich2, Haggai Landa1
1IBM Quantum, IBM Research - Israel, Haifa University Campus, Mount Carmel, Haifa 31905, Israel.
Physical review letters
|January 19, 2024
概括
我们开发了一种模拟杂量子系统的新模型,提高了超导量子比特模拟的准确性. 这种方法增强了量子错误校正和缓解策略.
科学领域:
- 量子信息科学 量子信息科学
- 超导量子计算 超导量子计算
- 量子动力学 量子动力学是什么?
背景情况:
- 多方纠状态对于量子计算至关重要,但易受噪声的影响.
- 超导量子比特是构建量子处理器的领先平台.
- 准确的噪声建模对于理解和控制量子系统至关重要.
研究的目的:
- 开发和验证一个数值模型,用于超导量子比特中的多方纠状态的噪音演变.
- 调查电荷平价波动对量子态动态的影响.
- 为了证明模型在模拟大规模量子系统和错误缓解技术方面的有效性.
主要方法:
- 对超导量子比特设备的实验研究.
- 使用扩展的马科维环境模型进行数值模拟.
- 分析因电荷平价波动导致的连贯频率转移.
- 动态解序列的应用,以减轻交叉通话的发生.
主要成果:
- 对超导量子比特动态的准确建模需要考虑连贯的频率转移.
- 拟议的扩展马科维环境模型在数值上可扩展到几十个量子比特.
- 实验和模拟显示,最多12个合量子比特的协议很好.
- 观察到稳定器的衰变和复苏,这与量子错误纠正有关.
- 证明了对两个量子位连贯相互作用 (交叉声) 的缓解.
结论:
- 开发的噪声模型和数值方法为量子错误纠正和缓解提供了宝贵的见解.
- 这些发现有助于我们更好地理解大型多量子比特系统中的散散动态.
- 这项研究为进一步研究复杂的量子动力学和错误管理铺平了道路.
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