关键词: 态的区分, [PT-]对称, 非自伴, 测量

Abstract: The problem of quantum state discrimination is important in many applications of quantum information technology. In quantum mechanics, two states [ψ1] and [ψ2] can be discriminated if and only if they are orthogonal. The state-discrimination problem is examined in the context of [PT] quantum mechanics, the approach is based on the fact that a non-Hermitian [PT-]symmetric Hamiltonian determines the new inner product for the Hilbert space, description of the discrimination for the two states [ψ1] and [ψ2] are given. And it will be discussed in detail on the problem through examples.

Key words: state discrimination, [PT-]symmetry, non-Hermitian, measurement