Roy Kasher completed his M.Sc. at Tel Aviv University in 2010 under the supervision of Julia Kempe and Amnon Ta-Shma, and this work was written while a student there. He currently works for Google in New York.

Julia Kempe completed her Ph.D. in Mathematics on noiseless quantum computation at the University of California, Berkeley, under the supervision of Elwyn Berlekamp and K. Birgitta Whaley, and in Computer Science on quantum walks at the École Nationale Supérieure des Télécommunications, France, under the supervision of Gérard Cohen. She is currently Directeur de Recherche (Senior Researcher) at the CNRS in Paris, France and Associate Professor (on leave) at the Computer Science Department of Tel Aviv University, Israel. Her research interests lie in quantum computation and quantum information.