Quantum search on graphene lattices

Phys Rev Lett. 2014 Feb 21;112(7):070504. doi: 10.1103/PhysRevLett.112.070504. Epub 2014 Feb 21.

Abstract

We present a continuous-time quantum search algorithm on a graphene lattice. This provides the sought-after implementation of an efficient continuous-time quantum search on a two-dimensional lattice. The search uses the linearity of the dispersion relation near the Dirac point and can find a marked site on a graphene lattice faster than the corresponding classical search. The algorithm can also be used for state transfer and communication.