arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1204.3296quant-ph
收藏

非厄米特系统中的弱测量

Weak Measurements in Non-Hermitian Systems

A. Matzkin

摘要:

“弱测量”-涉及一个弱的量子系统和一个米之间的相互作用,然后由投影测量-调查时,系统具有非厄米哈密顿量。我们特别展示了如何的标准定义的“弱值”的观察必须修改。这些研究是在束缚态散射理论的背景下进行的,这是一种非厄米特形式主义,其中所涉及的希尔伯特空间是明确定义的,度量算子可以明确计算。数值例子给出了一个模型系统。

英文摘要:

"Weak measurements" -- involving a weak unitary interaction between a quantum system and a meter followed by a projective measurement -- are investigated when the system has a non-Hermitian Hamiltonian. We show in particular how the standard definition of the "weak value" of an observable must be modified. These studies are undertaken in the context of bound state scattering theory, a non-Hermitian formalism for which the Hilbert spaces involved are unambiguously defined and the metric operators can be explicitly computed. Numerical examples are given for a model system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑