Speaker
Description
Squeezed light is central to the success of future GW detectors, such as Einstein Telescope, but it's also very susceptible to various sources of loss. One of the most important and at the same time less understood sources is mode mismatch between different cavities in the interferometer. Not only it affects the squeezing directly as usual loss, but also couples in anti-squeezing, if the phases between the fundamental and higher-order modes are not matched. Future detectors have multiple cavities, and different processes that impact mode matching between them, and especially the relative phase between the modes. Understanding this process is crucial for planning future detectors. Unfortunately, this issue has not yet received the attention it calls for.
In ET, we are working on this issue, but we require a significant increase in human resource and expertise on the subject. This poster intends to draw attention to the problem and spark discussions on the issue among the participants.
