论文标题
直流鱿鱼与单模辐射场相互作用的纠缠动力学
Entanglement dynamics of a dc SQUID interacting with a single-mode radiation field
论文作者
论文摘要
在这项工作中，我们研究了超导装置作为直流鱿鱼之间的耦合，从具有两个自由度的人工原子模拟，以及用于信息转移过程的单模辐射场。我们证明，人造原子能量水平之间的种群转移产生了纠缠动力学，从而导致一对光子的产生。此外，我们显示了超导装置的内部模式之间的量子信息转移，最初处于最大纠缠状态和辐射场。人造原子吸收光子，并且随着量子相干性从超导装置传递到光子，辐射场模式被纠缠在一起。这些结果增强了超导设备在量子信息的转移中的适用性，从而有助于新兴量子技术的有希望的应用。
In this work, we study the coupling between a superconducting device as a dc SQUID, simulated from an artificial atom with two degrees of freedom, and a single-mode radiation field for the information transference process. We demonstrate that the population transfer among the energy levels of the artificial atom yields an entanglement dynamics, which leads to the generation of a pair of photons. Moreover, we show the quantum information transference between the internal modes of the superconducting device, initially in a maximally entangled state, and the radiation field. The artificial atom absorbs the photon, and the radiation field modes become entangled as quantum coherence is transmitted from the superconducting device to the photons. These results strengthen the applicability of superconducting devices for the transference of quantum information, contributing to promising applications in emerging quantum technologies.
