Patras 2022 - 27 - Alex Sushkov - Quantum limits on magnetic resonance searches for ALP dark matter

Dr. Alex Sushkov from the Boston University, USA, talks about "The quantum limits on magnetic resonance searches for axion-like dark matter" at the 17th Patras Workshop on Axions, WIMPs and WISPs.

The Patras Workshop took place at the Johannes Gutenberg University of Mainz as the second week of events within the Wavy Dark Matter Summer event series in August 2022. www.wavydarkmatter.org

Abstract:
Magnetic resonance is a versatile tool for searching for axion-like
dark matter. CASPEr is one example of this approach. I will focus
on the quantum limits on the sensitivity of magnetic-resonancebased
searches, emphasizing the importance of evading back action
on the spin ensemble from the sensor used to detect its dynamics [1].
I will also discuss schemes that have potential for achieving sensitivity
beyond the spin projection noise limit, and their experimental
feasibility.
[1] Aybas, D., Bekker, H., Blanchard, J., Budker, D., Centers,
G., Figueroa, N., Gramolin, A., Kimball, D. F., Wickenbrock, A.,
Sushkov, A. O., “Quantum Sensitivity Limits of Nuclear Magnetic
Resonance Experiments Searching for New Fundamental Physics.”
Quantum Science and Technology 6(3), 034007 (2021).