Journal
PHYSICAL REVIEW A
Volume 72, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.72.064301
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We present a new set of generators for unitary maps over C-2 which differs from the traditional rotation-based generating set in that it uses a single-parameter family of unitaries J(alpha). These generators are implementable in the one-way model [Raussendorf and Briegel, Phys. Rev. Lett. 86, 5188 (2001)] using only two qubits, and lead to both parsimonious and robust implementations of general unitaries. As an illustration, we give an implementation of the controlled-U family which uses only 14 qubits, and has a 2-colorable underlying entanglement graph (known to yield robust entangled states).
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