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arXiv quant-ph/9803053quant-ph
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位置和动量的最优联合测量

Optimal Joint Measurements of Position and Momentum

D. M. Appleby

摘要:

本文研究了位置和动量同时测量的最大精度无偏测量值的分布。它示出,如果测量是追溯最优的,那么结果的分布由初始状态Husimi函数(或Q-表示)给出。如果测量是预测最优的,则结果的分布与最终状态反胡西米函数(或P-表示)有关。讨论了这一普适性质对Husimi函数解释的意义。

英文摘要:

The distribution of measured values for maximally accurate, unbiased simultaneous measurements of position and momentum is investigated. It is shown, that if the measurement is retrodictively optimal, then the distribution of results is given by the initial state Husimi function (or Q-representation). If the measurement is predictively optimal, then the distribution of results is related to the final state anti-Husimi function (or P-representation). The significance of this universal property for the interpretation of the Husimi function is discussed.

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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