The discrete harmonic oscillator, Harper's equation, and the discrete fractional Fourier transform

Laurence Barker*, Çaǧatay Candan, Tuǧrul Hakioǧlu, M. Alper Kutay, Haldun M. Ozaktas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

Certain solutions to Harper's equation are discrete analogues of (and approximations to) the Hermite-Gaussian functions. They are the energy eigenfunctions of a discrete algebraic analogue of the harmonic oscillator, and they lead to a definition of a discrete fractional Fourier transform (FT). The discrete fractional FT is essentially the time-evolution operator of the discrete harmonic oscillator.

Original languageEnglish
Pages (from-to)2209-2222
Number of pages14
JournalJournal of Physics A: Mathematical and General
Volume33
Issue number11
DOIs
Publication statusPublished - 24 Mar 2000
Externally publishedYes

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