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arXiv quant-ph/0204031quant-ph
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多模干涉仪相移检测的量子极限

Quantum limits on phase-shift detection using multimode interferometers

Jonas Soderholm, Gunnar Bjork, Bjorn Hessmo, Shuichiro Inoue

摘要:

分析了光学多模干涉仪的基本相移检测特性。对于给定平均能量的一般量子态,导出了完全可分辨相移的极限。在早期的工作相比,限制被发现是独立的干扰模式的数量。然而,所报道的界限与海森堡极限一致。一个简短的讨论定义明确的相对相位的概念也包括在内。

英文摘要:

Fundamental phase-shift detection properties of optical multimode interferometers are analyzed. Limits on perfectly distinguishable phase shifts are derived for general quantum states of a given average energy. In contrast to earlier work, the limits are found to be independent of the number of interfering modes. However, the reported bounds are consistent with the Heisenberg limit. A short discussion on the concept of well-defined relative phase is also included.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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