论文标题
使用非线性光学元件对Unruh-Dewitt检测器进行量子模拟
Quantum simulation of Unruh-DeWitt detectors with nonlinear optics
论文作者
论文摘要
我们提出了一种模拟Unruh-Dewitt检测器的方法，该检测器与1+1维无质量标量场相结合，并具有适当设计的$χ^{（2）} $非线性相互作用。在此仿真中，扮演检测器加速度的角色的参数由非线性材料内的相对逆组速度梯度发挥作用。我们确定调整检测器能量差距，加速度和切换功能的实验参数。该系统可以模拟时间依赖性加速度，时间依赖性检测器能隙和非vAcuum初始检测器场状态。此外，对于非常短的材料，该系统可以模拟弱的抗UNRUH效应，其中检测器的响应随加速度的降低。虽然已经在非线性光学元件中研究了一些与UNRUH相关的现象，但这是模拟这些系统中的Unruh-Dewitt检测器的第一个建议。
We propose a method for simulating an Unruh-DeWitt detector, coupled to a 1+1-dimensional massless scalar field, with a suitably-engineered $χ^{(2)}$ nonlinear interaction. In this simulation, the parameter playing the role of the detector acceleration is played by the relative inverse-group-velocity gradient inside the nonlinear material. We identify experimental parameters that tune the detector energy gap, acceleration, and switching function. This system can simulate time-dependent acceleration, time-dependent detector energy gaps, and non-vacuum initial detector-field states. Furthermore, for very short materials, the system can simulate the weak anti-Unruh effect, in which the response of the detector decreases with acceleration. While some Unruh-related phenomena have been investigated in nonlinear optics, this is the first proposal for simulating an Unruh-DeWitt detector in these systems.
