Speaker
Alex Semeraro
(McGill)
Description
Direct detection of dark matter represents a central unsolved problem, eluding physicists for decades. Recent advancements in the field of optomechanics have proven to be relevant in the search for ultralight dark matter, specifically dark matter in the mass ranges of 10-15 eV – 10-9 eV. One such advancement is the concept of a superfluid helium acoustic dark matter sensor (HeLIOS), which is essentially a can filled with superfluid helium with passing dark matter driving (hopefully) observable pressure oscillations. Here we investigate how changes in pressure can in principle be detected by light in an embedded optical cavity, focusing on two configurations: a Fabry-Perot cavity and a "bowtie" ring resonator.
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Author
Alex Semeraro
(McGill)