A Simple Method on Generating any Bi-Photon Superposition State with Linear Optics

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2017,（4）
• 页码范围: 391-395
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0253-6102/67/4/391

摘要

We present a simple method on the generation of any bi-photon superposition state using only linear optics.In this scheme,the input states,a two-mode squeezed state and a bi-photon state,meet on a beam-splitter and the output states are post-selected with two threshold single-photon detectors.We carry out corresponding numerical simulations by accounting for practical experimental conditions,calculating both the Wigner function and the state fidelity of those generated bi-photon superposition states.Our simulation results demonstrate that not only distinct nonclassical characteristics but also very high state fidelities can be achieved even under imperfect experimental conditions.