Physics – Quantum Physics
Scientific paper
2005-07-18
Quantum Information Processing: From Theory to Experiment, NATO Science Series: Computer and Systems Sciences, Vol. 199, IOS P
Physics
Quantum Physics
8 pages, 2 figures
Scientific paper
Construction of explicit quantum circuits follows the notion of the "standard circuit model" introduced in the solid and profound analysis of elementary gates providing quantum computation. Nevertheless the model is not always optimal (e.g. concerning the number of computational steps) and it neglects physical systems which cannot follow the "standard circuit model" analysis. We propose a computational scheme which overcomes the notion of the transposition from classical circuits providing a computation scheme with the least possible number of Hamiltonians in order to minimize the physical resources needed to perform quantum computation and to succeed a minimization of the computational procedure (minimizing the number of computational steps needed to perform an arbitrary unitary transformation). It is a general scheme of construction, independent of the specific system used for the implementation of the quantum computer. The open problem of controllability in Lie groups is directly related and rises to prominence in an effort to perform universal quantum computation.
Chatzisavvas Ch. K.
Daskaloyannis Costas
Panos C. P.
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