Abah Obinna, Puebla Ricardo, Paternostro Mauro
Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
Phys Rev Lett. 2020 May 8;124(18):180401. doi: 10.1103/PhysRevLett.124.180401.
We present a fast and robust framework to prepare nonclassical states of a bosonic mode exploiting a coherent exchange of excitations with a two-level system ruled by a Jaynes-Cummings interaction mechanism. Our protocol, which is built on shortcuts to adiabaticity, allows for the generation of arbitrary Fock states of the bosonic mode, as well as coherent quantum superpositions of a Schrödinger cat-like form. In addition, we show how to obtain a class of photon-shifted states where the vacuum population is removed, a result akin to photon addition, but displaying more nonclassicality than standard photon-added states. Owing to the ubiquity of the spin-boson interaction that we consider, our proposal is amenable for implementations in state-of-the-art experiments.
我们提出了一个快速且稳健的框架，用于利用与由Jaynes-Cummings相互作用机制支配的两能级系统的激发相干交换来制备玻色子模式的非经典态。我们基于绝热捷径构建的协议允许生成玻色子模式的任意福克态，以及薛定谔猫态形式的相干量子叠加态。此外，我们展示了如何获得一类去除了真空布居的光子移位态，这一结果类似于光子添加，但比标准的添加光子态表现出更多的非经典性。由于我们所考虑的自旋-玻色子相互作用的普遍性，我们的提议适用于当前最先进实验中的实现。
