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灵活的读数和无条件重置用于具有可调整的Purcell过器的超导多量子比特处理器
Yong-Xi Xiao1,2, Da'er Feng1,2, Xu-Yang Gu1,2
1Institute of Physics, Chinese Academy of Sciences, Beijing National Laboratory for Condensed Matter Physics, Beijing 100190, China.
Physical review letters
|March 6, 2026
概括
我们开发了一个可扩展的架构,使用可调节的非线性Purcell过器来实现高保真超导量子比特读取和快速重置. 这项技术增强了量子错误校正和先进的量子算法.
科学领域:
- 量子计算是一种量子计算.
- 超导电路中的超导电路
- 量子错误纠正方法 量子错误纠正方法
背景情况:
- 高保真度量子比特读取和重置对于量子错误纠正和先进的量子算法至关重要.
- 在这些操作期间保持量子比特连贯性是一个重大挑战.
研究的目的:
- 设计和演示可扩展的架构,用于灵活的量子比特读取和快速无条件重置.
- 为了提高量子比特连贯性和减轻超导量子系统中的噪声源.
主要方法:
- 使用可调频的非线性普尔塞尔波器来动态控制读出共振器线宽.
- 实施了多层次的读取协议,以提高信号噪声比和光子噪声抑制.
- 利用相邻的合通道进行快速,无条件的量子位重置,包括泄漏状态.
主要成果:
- 在没有量子限制放大器的情况下,实现了99.3%的记录读取保真度.
- 在200 ns内,证明了无条件的量子位重置了2和1状态 (错误率≤1%).
- 显示在75秒内重置 状态,错误率 ≤1%.
- 过器减轻了光子诱导的脱相和珀塞尔效应,保持了量子比特连贯性.
结论:
- 开发的可扩展的Purcell过器架构在量子比特读取,重置和保护方面提供了卓越的性能.
- 这项技术代表了一个有前途的硬件组件,用于推进容错量子计算.
- 该架构允许对超导量子比特进行灵活的控制和提高效率.
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