为了实际应用,将多方聚合可纠的一般化:混合,量子和光学状态
Steph Foulds1,2, Oliver Prove2, Viv Kendon1,2
1Physics Department, University of Strathclyde, Glasgow G4 0NG, UK.
概括
这项研究增强了用于检测量子纠的受控SWAP测试,使其对混合状态强大,并且适用于像量子位和光学状态这样的更高维度系统.
科学领域:
- 量子信息科学 量子信息科学
- 量子光学是一种量子光学.
- 量子计算是一种量子计算.
背景情况:
- 控制SWAP (c-SWAP) 测试有效地检测和量化纯量子比特状态中的纠.
- 可缩纠 (CE) 是一个关联的测量,对量子信息处理至关重要.
- 现有的方法面临着混合状态和更高维度系统的挑战.
研究的目的:
- 为实际量子信息应用扩展c-SWAP测试和CE测量.
- 为混合状态CE开发强大的边界,适应c-SWAP测试错误.
- 验证CE作为一个更高维的纠测量.
主要方法:
- 研究了可缩纠的下限.
- 推测了混合状态CE的上限,对c-SWAP测试错误具有稳定性.
- 对于更高维度状态 (qudits,纠的光学状态) 的计算CE.
主要成果:
- c-SWAP测试和CE适用于混合实验状态中的纠的表征.
- 混合状态CE的假设上限提供了对c-SWAP测试错误的稳定性.
- CE被验证为高维纠的多功能测量方法.
结论:
- 这项工作提高了纠表征工具在现实量子实验中的适用性.
- 扩展的CE测量提供了一种可靠的方法来量化各种量子系统中的纠.
- 这些发现促进了量子信息处理和量子状态表征的进步.
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