Preprint Article Version 1 This version is not peer-reviewed

Can Schrödinger and Heisenberg Make a Contribution to the Spectral Analysis of Signals?

Version 1 : Received: 28 January 2018 / Approved: 28 January 2018 / Online: 28 January 2018 (17:35:55 CET)

How to cite: Mastriani, M. Can Schrödinger and Heisenberg Make a Contribution to the Spectral Analysis of Signals?. Preprints 2018, 2018010265 (doi: 10.20944/preprints201801.0265.v1). Mastriani, M. Can Schrödinger and Heisenberg Make a Contribution to the Spectral Analysis of Signals?. Preprints 2018, 2018010265 (doi: 10.20944/preprints201801.0265.v1).

Abstract

A quantum time-dependent spectrum analysis, or simply, quantum spectral analysis (QSA) is presented in this work, and it’s based on Schrödinger’s equation. In the classical world, it is named frequency in time (FIT), which is used here as a complement of the traditional frequency-dependent spectral analysis based on Fourier theory. Besides, FIT is a metric which assesses the impact of the flanks of a signal on its frequency spectrum - not taken into account by Fourier theory and let alone in real time. Even more, and unlike all derived tools from Fourier Theory (i.e., continuous, discrete, fast, short-time, fractional and quantum Fourier Transform, as well as, Gabor) FIT has the following advantages, among others: a) compact support with excellent energy output treatment, b) low computational cost, O(N) for signals and O(N2) for images, c) it does not have phase uncertainties (i.e., indeterminate phase for a magnitude = 0) as in the case of Discrete and Fast Fourier Transform (DFT, FFT, respectively). Finally, we can apply QSA to a quantum signal, that is, to a qubit stream in order to analyze it spectrally.

Subject Areas

Fourier Theory; Heisenberg Uncertainty Principle; Quantum Fourier Transform; Quantum Information Processing; Schrödinger equation; Spectral Analysis

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