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Universal Control of Decoupled Quantum Systems

Lorenza Viola·Seth Lloyd·Emanuel Knill
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Abstract

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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Lorenza Viola, Seth Lloyd, Emanuel Knill. 1999-06-24. Universal Control of Decoupled Quantum Systems. https://doi.org/10.1103/physrevlett.83.4888

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