学术论文

郭鑫垚

个人简介

郭鑫垚,致理书院物理学方向2020级本科生,清华大学叶企孙物理学堂班成员。主要研究方向为量子精密测量和引力波探测,研究成果较为突出,并因此获得国自然青年基金项目的资助。在校期间曾获得校级综合优秀奖学金,学业优秀奖学金等各类奖学金。

文献著录信息

Guo, X., Zhang, T., Martynov, D., & Miao. H.* (2023). Sensing and control scheme for the inteferometer configuration with an L-shaped resonator. Classical and Quantum Gravity, 40(23), 235005. doi:10.1088/1361-6382/ad0454

论文摘要

The detection of high-frequency gravitational waves (GWs) around kHz is critical to understand the physics of binary neutron star mergers. A new interferometer design has been proposed in (Zhang et al 2023 Phys. Rev. X 13 021019), featuring an L-shaped optical resonator as the arm cavity, which resonantly enhances kHz GW signals. This new configuration has the potential to achieve better high-frequency sensitivity than the dual-recycled Fabry–Perot Michelson. In this paper, we propose a sensing and control scheme for this configuration. Despite having the same number of length degrees of freedom as the dual-recycled Fabry–Perot Michelson, the new configuration requires one less degree of freedom to be controlled owing to the system's insensitive to the fluctuation of L_l_. We have also shown that introducing the Schnupp asymmetry is ineffective for controlling the signal-recycling cavity length. Therefore, we propose adding control fields from the dark port to control this auxiliary degree of freedom.