Current ground-based gravitational-wave (GW) detectors are measuring displacements at the quantum limit. I will summarize the current work on the quantum measurements frontier in the LIGO collaboration and show that it is possible for a macroscopic, room-temperature system to have low enough Brownian motion so as to exhibit measureable quantum effects. If time permits, I will provide a sneak-peak my recent endeavors on the hunt for axions, dark matter, and high-frequency GWs. I will talk about a miniature 10-300 kHz GW detector using levitated nanoparticles and possible GW sources at these frequencies. I will also summarize an experiment to look for spin-dependent forces beyond the standard model mediated by the axion. Placing limits on this interaction requires the precision to measure an equivalent magnetic field of 10^-18 T. This necessitates use of multiple cutting-edge research enterprises, each with its own set of prerequisites, all integrated into one setup.
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Meeting ID: 949 3906 9387