论文标题
基于光电子的量子雷达：纠缠可持续性在高温下改善
Optoelectronic based Quantum Radar: Entanglement Sustainability Improving at High Temperature
论文作者
论文摘要
在这项研究中，主要重点放在光电量子照明系统的设计上，以增强系统性能，例如在高温下运行和热激发光子的限制。基于光力学的量子照明系统已经被研究了，结果表明，高温下的操作对于保留模式之间的纠缠至关重要。主要问题是机械零件必须以低频进行操作，从而产生大量热激发光子并使纠缠恶化。为了解决这个问题，我们专注于用光电组件替换机械零件。在该系统中，光腔通过光电探测器激发的变量二极管耦合到微波腔。光电探测器受到光腔模式的激发，并将电流流动作为入射光的函数驱动变量二极管，该变量二极管是电压探测器生成的电流的函数。为了设计系统，研究了某些参数的效果。关键参数之一是光电探测器耦合因子的微波腔。我们的结果表明，与光力学量子照明系统相比，这种耦合因子在新设计中引起了显着差异。在耦合因子的某些特定值下，模式保持完全纠缠到5.5 k，部分纠缠在50 K左右。
In this study, the main focus is laid on the design of the optoelectronic quantum illumination system to enhance the system performance, such as operation at high temperature and confinement of the thermally excited photons. The optomechanical based quantum illumination system has wieldy been studied, and the results showed that operation at high temperature is so crucial to preserve the entanglement between modes. The main problem is that the mechanical part has to operate with a low frequency with which a large number of thermally excited photons are generated and worsened the entanglement. To solve this problem, we focus on replacing the mechanical part with the optoelectronic components. In this system, the optical cavity is coupled to the microwave cavity through a Varactor diode excited by a photodetector. The photodetector is excited by the optical cavity modes and drives the current flow as a function of incident light drives the Varactor diode at which the voltage drop is a function of current generated by the photodetector. To engineer the system, the effect of some parameters is investigated. One of the critical parameters is the microwave cavity to the photodetector coupling factor. Our results indicate that this coupling factor induces a significant difference in the new design as compared to the optomechanical quantum illumination system. At some specific values of the coupling factor, the modes remained completely entangled up to 5.5 K and partially entangled around 50 K.
