Speaker
Description
HAYSTAC (Haloscope At Yale Sensitive To Axion CDM) is the first haloscope to leverage quantum squeezing to noiselessly amplify its cavity readout. This broadens the sensitivity bandwidth, allowing HAYSTAC to achieve a maximum scan-rate enhancement of 2x. In Phase I of data taking, HAYSTAC excluded axions between 23.55-24.0 μeV at the 90% confidence level. After implementing a squeezed-state receiver in Phase II, HAYSTAC achieved an aggregate exclusion between 16.96-19.46 μeV at the 90% confidence level.
Phases I & II of HAYSTAC used a cylindrical microwave cavity with a single tuning rod. For Phase III, HAYSTAC upgraded to a multi-rod cavity that can perform high-frequency searches with a high FOM, allowing searches between 5.5-7.3 GHz (22.75-30.19 μeV). This talk will provide an overview of the HAYSTAC experiment and its recent results. I will also discuss recent innovations, implementation of the seven-rod cavity and the outlook for HAYSTAC’s Phase III.
| Primary Abstract Topic | Experiment: Axions and Wave-Like-DM |
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