Microscopic Derivation of Open Quantum Walk on Two-Node Graph

摘要

A microscopic derivation of an open quantum walk on a two-node graph is presented. It is shown that for the considered microscopic model of the system-bath interaction the resulting quantum master equation takes the form of a generalised master equation. The explicit form of the "quantum coin" operators is derived. The formalism is demonstrated on the example of a two-level system walking on a two-node graph.