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1 August 2021 Optically levitated dark matter sensors
Fernando Monteiro, Jiaxiang Wang
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Proceedings Volume 11798, Optical Trapping and Optical Micromanipulation XVIII; 1179818 (2021) https://doi.org/10.1117/12.2595416
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
Recent developments in optical trapping techniques in high vacuum allow micron-sized objects to be used as precise acceleration and force sensors with respective sensitivities of 100ng/sqrt(Hz) and 1aN/sqrt(Hz), making these sensors ideal to measure tiny forces and recoils which are the result of interactions with the environment. Due to single-electron control of the electric charge, these sensors can be made electrically neutral. This not only enables better isolation from electromagnetic noise, but also allows the measurement of electric charges on the order of 10^-4e. This levitated object is used in the search of new physics in regions of parameter space inaccessible by other techniques. This talk will discuss such sensor characterization and capabilities as well as recent results of searches for dark matter, millicharged particles bound to matter and projections for a search for short ranged interactions.
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Fernando Monteiro and Jiaxiang Wang "Optically levitated dark matter sensors", Proc. SPIE 11798, Optical Trapping and Optical Micromanipulation XVIII, 1179818 (1 August 2021); https://doi.org/10.1117/12.2595416
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KEYWORDS
Sensors
Electromagnetism
Environmental sensing
Optical tweezers
Particles
Physics
Temperature metrology
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