Physics – Quantum Physics
Scientific paper
2008-07-25
Phys. Rev. A 79, 042330 (2009)
Physics
Quantum Physics
9 pages, 4 figures v2: small correction to cooling section
Scientific paper
10.1103/PhysRevA.79.042330
Simple constructions and protocols are demonstrated to allow the implementation of universal quantum computation on an arbitrarily large quantum system by controlling a fixed number of spins, vastly reducing the engineering requirements in comparison to a direct implementation of the circuit model. Analytic pulse sequences are derived for deterministic gate operation and system cooling which only require pulse strengths that are comparable to the intrinsic Hamiltonian of the system.
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