Momentum switches 601
(pp0601-0621)
Andrew
M. Childs, David Gosset, Daniel Nagaj, Mouktik Raha, and Zak Webb
doi:
https://doi.org/10.26421/QIC15.7-8-5
Abstracts:
Certain continuous-time quantum walks can be viewed as scattering
processes. These processes can perform quantum computations, but it is
challenging to design graphs with desired scattering behavior. In this
paper, we study and construct momentum switches, graphs that route
particles depending on their momenta. We also give an example where
there is no exact momentum switch, although we construct an arbitrarily
good approximation.
Key words:
quantum walk, scattering theory |