English

Quantum hypercomputation based on the dynamical algebra su(1,1)

Quantum Physics 2009-11-13 v2

Abstract

An adaptation of Kieu's hypercomputational quantum algorithm (KHQA) is presented. The method that was used was to replace the Weyl-Heisenberg algebra by other dynamical algebra of low dimension that admits infinite-dimensional irreducible representations with naturally defined generalized coherent states. We have selected the Lie algebra su(1,1)\mathfrak{su}(1,1), due to that this algebra posses the necessary characteristics for to realize the hypercomputation and also due to that such algebra has been identified as the dynamical algebra associated to many relatively simple quantum systems. In addition to an algebraic adaptation of KHQA over the algebra su(1,1)\mathfrak{su}(1,1), we presented an adaptations of KHQA over some concrete physical referents: the infinite square well, the infinite cylindrical well, the perturbed infinite cylindrical well, the P{\"o}sch-Teller potentials, the Holstein-Primakoff system, and the Laguerre oscillator. We conclude that it is possible to have many physical systems within condensed matter and quantum optics on which it is possible to consider an implementation of KHQA.

Keywords

Cite

@article{arxiv.quant-ph/0602082,
  title  = {Quantum hypercomputation based on the dynamical algebra su(1,1)},
  author = {Andrés Sicard and Juan Ospina and Mario Vélez},
  journal= {arXiv preprint arXiv:quant-ph/0602082},
  year   = {2009}
}

Comments

25 pages, 1 figure, conclusions rewritten, typing and language errors corrected and latex format changed minor changes elsewhere and l