Dynamical Casimir effect using electron beam driven high power ultrasonic source

动态Casimir效应是通过振荡高频腔边界壁来观察真空中的电磁波的唯一途径，但现有的压电式器件等获取超声波的技术远远低于所需功率。利用超低噪声放大器测量了真空的射频输出。

The dynamical Casimir effect is the only way to observe the electromagnetic wave from the vacuum by oscillating the boundary wall of the RF cavity.However the existing technology such as piezo electric device to obtain the ultrasonic wave is much less than the required power In this research, the electron driven high power ultrasonic source was developed to oscillate the wall of the superconducting cavity. The RF output from the vacuum was measured using ultra low noise amplifier.