Non-multiple non-equidimensional bases and unsharp measurements

Dmitry V. Dodin, I. Kovalenko
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Abstract

We consider a procedure of measurement of a quantum system in case when its dimension and the dimension of the basis of a measuring device relate as ratio of integer numbers. This procedure of measurement is introduced here as a "procedure of measurement in different-dimensional bases". We develop a new mathematical formalism describing this kind of measurement. It is demonstrated that when the dimension of the system is divisible by the dimension of basis for the measuring instrument, our results coincide with conventional theoretical developments. We consider measurement in different-dimensional bases as a kind of unsharp measurement.
非多重非等维基底和不锋利的测量
当量子系统的维数与测量装置基的维数为整数之比时,我们考虑一个量子系统的测量过程。这种测量方法在这里被称为“不同量纲基的测量方法”。我们发展了一种新的数学形式来描述这种测量。结果表明,当系统的尺寸可以被测量仪器的基座尺寸整除时,我们的结果与传统的理论发展相一致。我们认为不同维基的测量是一种非尖锐测量。
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