Weak convergence of complex-valued measure for bi-product path space induced by quantum walk
英文摘要：
In this paper, a complex-valued measure of bi-product path space induced by quantum walk is presented. In particular, we consider three types of conditional return paths in a power set of the bi-product path space (1) $Λ\times Λ$, (2) $Λ\times Λ'$ and (3) $Λ'\times Λ'$, where $Λ$ is the set of all $2n$-length ($n\in \mathbb{N}$) return paths and $Λ'(\subseteq Λ)$ is the set of all $2n$-length return paths going through $nx$ ($x\in [-1,1]$) at time $n$. We obtain asymptotic behaviors of the complex-valued measures for the situations (1)-(3) which imply two kinds of weak convergence theorems (Theorems 1 and 2). One of them suggests a weak limit of weak values.
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