Universal Control of Decoupled Quantum Systems

Details Universal Control of Decoupled Quantum Systems Universal Control of Decoupled Quantum Systems

1999-06-24

arxiv.org/abs/quant-ph/9906094v1

Phys.Rev.Lett.83:4888-4891,1999

Physics

Quantum Physics

4 pages, no figures; REVTeX style

Scientific paper

10.1103/PhysRevLett.83.4888

It is shown that if one can perform a restricted set of fast manipulations on a quantum system, one can implement a large class of dynamical evolutions by effectively removing or introducing selected Hamiltonians. The procedure can be used to achieve universal noise-tolerant control based on purely unitary open-loop transformations of the dynamics. As a result, it is in principle possible to perform noise-protected universal quantum computation using no extra space resources.

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