Universality of single quantum gates
Bela Bauer, Claire Levaillant, Michael Hartley Freedman · arXiv (Cornell University) · 2014
We supply a rigorous proof that an open dense set of all possible 2-qubit gates G has the property that if the quantum circuit model is restricted to only permit swap of qubits lines and the application of G to pairs of lines, then the model is still computationally universal.