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arXiv 1901.07415quant-phcond-mat.stat-mech
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弱测量量子精密测温

Quantum precision thermometry with weak measurement

Arun Kumar Pati, Chiranjib Mukhopadhyay, Sagnik Chakraborty, Sibasish Ghosh

摘要:

随着对温度敏感的电子设备的小型化迅速发展,用更小的探针感测温度比以往任何时候都更重要。因此,量子力学测温方案预计将对未来的技术进步至关重要。提出了一种利用有限维探针弱测量方案测量熔池温度的新方法。本方案提供的精度不仅显示出与通常的基于量子费舍尔信息的测温协议类似的定性特征,而且还允许通过明智地选择后选择测量来灵活地设置最佳测温窗口。

英文摘要:

As the minituarization of electronic devices, which are sensitive to temperature, grows apace, sensing of temperature with ever smaller probes is more important than ever. Genuinely quantum mechanical schemes of thermometry are thus expected to be crucial to future technological progress. We propose a new method to measure the temperature of a bath using the weak measurement scheme with a finite dimensional probe. The precision offered by the present scheme not only shows similar qualitative features as the usual Quantum Fisher Information based thermometric protocols, but also allows for flexibility over setting the optimal thermometric window through judicious choice of post selection measurements.

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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