Orateur
Rafael Nepomechie
Description
Preparing a given quantum state on a quantum computer using elementary unitary gates is an interesting but challenging problem. We focus here on the preparation of exact eigenstates of the spin-1/2 Heisenberg quantum spin chain, and of its integrable higher-spin and higher-rank generalizations. We consider an approach that makes use of a Gray code — a sequence of strings of integers, such that each string differs in a minimal way from its successor; introduced in the 1940’s for telecommunication, and much-studied in combinatorics.