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5 October 2023 Measuring gravitational force from Femto-gram source masses
Mohamed El Kabbash
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Proceedings Volume PC12649, Optical Trapping and Optical Micromanipulation XX; PC126490E (2023) https://doi.org/10.1117/12.2681763
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
Here, we propose an experiment, based on levitation optomechanics, to measure gravitational forces from nanoscale objects. In the experiment, two optically trapped particles in ultrahigh vacuum conditions represent the source and test masses. Importantly, the source mass is a rotating Janus nanoparticle such that the test mass (sensor) experiences a periodic gravitational potential. Using realistic experimental parameters, a signal-to-noise ratio ≥ 1 is obtained for a Janus particle with radius ≥ 100 nm and a mass ≥ 10 fg. The proposed experiment enables first steps towards table-top tests of quantum gravity.
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Mohamed El Kabbash "Measuring gravitational force from Femto-gram source masses", Proc. SPIE PC12649, Optical Trapping and Optical Micromanipulation XX, PC126490E (5 October 2023); https://doi.org/10.1117/12.2681763
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KEYWORDS
Quantum optics experiments
Quantum measurement
Quantum particles
Nanoparticles
Quantum gravity sensors
Quantum light sources
Signal to noise ratio
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