在Transmons中对测量诱导过渡的抵消收费依赖
Mathieu Féchant1, Marie Frédérique Dumas2, Denis Bénâtre1
1Karlsruhe Institute of Technology, IQMT, 76131 Karslruhe, Germany.
Physical review letters
|November 17, 2025
概括
在超导量子处理器中,读出精度受到测量诱导过渡的限制. 这项研究证实,这些量子比特电离事件取决于门电荷,即使在跨子模式下,也提高了量子计算的准确性.
科学领域:
- 量子计算是一种量子计算.
- 超导量子比特是超导量子比特.
- 量子错误纠正方法 量子错误纠正方法
背景情况:
- 读出精度是可扩展的容错超导量子处理器的关键瓶.
- 测量诱导的过渡 (量子位电离) 由于多光子激发极限量子位读取精度.
- 量子计算中广泛使用的超声量子比特对这些电离事件很容易受到影响.
研究的目的:
- 实验性地研究跨子量子比特中测量诱导过渡的门电荷依赖性.
- 了解共振器光子群对量子比特电离化的影响.
- 通过纳入量化协议的更高层次效应来完善理论模型.
主要方法:
- 通过系统地增加共振器光子群体来表征测量诱导的过渡.
- 在实验期间,积极校准跨子量子比特的门电荷.
- 将实验结果与理论预测进行比较,包括更高阶的跨函数哈密尔顿式术语.
主要成果:
- 实验证实,测量诱导的转换在传递器中是取决于门电荷的.
- 这种电荷依赖性即使在量子比特频率对网关电荷不敏感时也存在.
- 通过包含更高阶波来实现理论和实验之间的定量协议.
结论:
- 量子比特电离的门电荷依赖性是影响超导量子比特读出准确性的关键因素.
- 准确的超声量子比特理论建模需要考虑更高阶效应.
- 解决这些测量诱导的转换对于推进容错量子计算至关重要.
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