Towards matterwave interferometry with levitated nanoparticles and tests of gravity at short distances

Andrew Dana

doi:10.1117/12.3027462

3 October 2024 Towards matterwave interferometry with levitated nanoparticles and tests of gravity at short distances

Andrew Dana

Author Affiliations +

Proceedings Volume PC13112, Optical Trapping and Optical Micromanipulation XXI; PC131120N (2024) https://doi.org/10.1117/12.3027462
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

Optical levitation in ultra-high vacuum (UHV) and cryogenic environments provides a platform potentially capable of providing quantum coherences of tens to hundreds of milliseconds for objects such as silica nano-spheres which are much more massive than atoms and molecules. Demonstration of matter-wave interference with optically levitated nanospheres has the potential to extend the current limit on matter-wave interference by three to four orders of magnitude, pushing the experimental limits on matter-wave duality. This would provide pathways towards the realization of gravity-induced entanglement experiments, tests of decoherence and wave function collapse models. To preserve a coherence time of approximately 200ms, experimental challenges such as near motional ground state cooling pressures below 10−13mbar, internal temperatures below 100K, and relative position stability on the order of tens of nanometers must be overcome. This apparatus additionally allows for precision measurements of short-range forces to test Newtonian gravity at sub-micron scales, the Casimir Polder force, matter neutrality, and other fundamental forces.

Conference Presentation

Citation Download Citation

Andrew Dana "Towards matterwave interferometry with levitated nanoparticles and tests of gravity at short distances", Proc. SPIE PC13112, Optical Trapping and Optical Micromanipulation XXI, PC131120N (3 October 2024); https://doi.org/10.1117/12.3027462

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