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arXiv 2208.03341quant-phcond-mat.stat-mech
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间接测量不确定度关系

Uncertainty relation for indirect measurement

Ryo Mihashi, Yoshihiko Hasegawa

摘要:

间接测量可以用来读出量子系统的结果,而不必诉诸直接的方法,它是测量不确定关系的基础,解释了共轭可观测量的不相容性。虽然测量不确定性已经建立了量子测量的准确性,热力学不确定性正在研究作为一个新的角度波动的可观测量的准确性,权衡在经典或量子制度的物理成本。根据这些思想,我们从量子热力学的角度导出了一种新的间接测量不确定度。所得到的结果显示了一个生存活动,这是一个狂热的贡献的热力学系统,由于测量方法和噪声之间的相互关系。此外,这种不确定性还可以通过普适的噪声-扰动关系影响不相容对应物的扰动。

英文摘要:

Indirect measurement can be used to read out the outcome of a quantum system without resorting to a straightforward approach, and it is the foundation of the measurement uncertainty relations that explain the incompatibility of conjugate observables. While measurement uncertainty has been established for the accuracy of quantum measurement, thermodynamic uncertainty is being researched as a new perspective on the accuracy of fluctuating observables that trades off a physical cost in the classical or quantum regime. Following these ideas, we derive a new measurement uncertainty with respect to indirect measurement in the light of quantum thermodynamics. The obtained result shows a reciprocal relation between a survival activity, which is a frenetic contribution to the thermodynamic system, and noise due to the measurement approach. Moreover, this uncertainty can also affect the disturbance of an incompatible counterpart through the universal noise-disturbance relation.

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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