Speaker: So Chigusa
Title: Light Dark Matter Search with Nitrogen-Vacancy Centers in Diamonds
Room: 3024 PSEL
Host: Hsin-Chia Cheng
Abstract: We propose new ideas to directly search for light dark matter, such as the axion or the dark photon, by using magnetometry with nitrogen-vacancy centers in diamonds. If the axion dark matter couples to the electron spin, it affects the evolution of the Bloch vectors consisting of the spin-triplet states, which may be detected through several magnetometry techniques. We give several concrete examples with the use of dc and ac magnetometry and estimate the sensitivity on dark matter couplings.
User:
High-Energy Seminars
Time:
4:10pm - 5:10pm
Send Reminder:
Yes - 20231109
Description:
Speaker: Dan Carney
Title: Fundamental physics at the quantum limits of measurement
Room: 285 PHY
Host: Matthew Citron
Zoom: https://ucdavis.zoom.us/j/96219753817?pwd=NFF6Mloxb3JXZGtQVTR3aUJpdUdqZz09
Abstract: Progress in fundamental physics--the search for new particles, forces, and laws of nature--relies on probing regimes of nature that have not yet been explored. This requires continuous development of ultra-sensitive detectors. In recent years, a number of experimental programs have begun to operate with sufficient precision that they have become limited not by technical sources of noise but by the very laws of quantum mechanics. While these limits have some history in the atomic, molecular, and optics community, they are relatively new to the high energy theory landscape. I'll give an overview of how quantum mechanics places limits on measurement sensitivity, and highlight a few key examples where these limits are playing an increasingly important role, including searches for dark matter, neutrinos, and gravitational waves.
User:
High-Energy Seminars
Time:
1:30pm - 3:00pm
Send Reminder:
Yes - 0 days 6 hour 0 minutes before start
Description:
Speaker:
Title:
Room: 3024
Host:
Abstract:
User:
High-Energy Seminars
Time:
1:30pm - 3:00pm
Send Reminder:
Yes - 0 days 6 hour 0 minutes before start
Description:
Speaker: Carlos Blanco (Princeton)
Title: Direct and indirect detection of dark matter with novel targets: why it pays to know a chemist
Room: 3024
Host: Hsin-Chia Cheng
Abstract: As the WIMP draws under increasing tension thanks to the ever increasing sensitivity of direct detection experiments, the majority of dark matter parameter space outside of the weak scale remains unexplored. Molecular and nano-scale systems are particularly well-suited to look for sub-GeV DM since their eV-scale electronic transitions may be excited through light dark matter interactions. In this seminar, will focus on the untapped potential of molecular and mesoscopic systems for direct DM detection, specifically discussing the utility of quantum dots (QDs) and organic crystals as detector targets. I will introduce the Molecular Migdal Effect as a novel directional method for detecting DM-induced nuclear recoils in molecular systems. The seminar will conclude with a discussion on the recent incorporation of these theoretical frameworks in studies of astrophysical objects and their relevance for indirect DM detection.
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