A. M. Childs, Gosset, D., Nagaj, D., Raha, M., and Webb, Z.,
“Momentum switches”,
Quantum Information and Computation, vol. 15, no. 7-8, pp. 601-621, 2015.
M. Aschbacher, Childs, A. M., and Wocjan, P.,
“The limitations of nice mutually unbiased bases”,
Journal of Algebraic Combinatorics, vol. 25, no. 2, pp. 111 - 123, 2007.