期刊
NEW JOURNAL OF PHYSICS
卷 20, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aaece4
关键词
quantum superposition tests; levitated optomechanics; torque sensing
资金
- Deutsche Forschungsgemeinschaft [DFG-394398290]
- Austrian Science Fund (FWF) [P27297]
- ESQ Discovery Grant ROTOQUOP of the Austrian Academy of Sciences (OAW)
- Austrian Science Fund (FWF) [P27297] Funding Source: Austrian Science Fund (FWF)
Whether quantum physics is universally valid is an open question with far-reaching implications. Intense research is therefore invested into testing the quantum superposition principle with ever heavier and more complex objects. Here we propose a radically new, experimentally viable route towards studies at the quantum-to-classical borderline by probing the orientational quantum revivals of a nanoscale rigid rotor. The proposed interference experiment testifies a macroscopic superposition of all possible orientations. It requires no diffraction grating, uses only a single levitated particle, and works with moderate motional temperatures under realistic environmental conditions. The first exploitation of quantum rotations of a massive object opens the door to new tests of quantum physics with submicron particles and to quantum gyroscopic torque sensors, holding the potential to improve state-of-the-art devices by many orders of magnitude.
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