Bounding quantum-gravity-inspired decoherence using atom interferometry

Minar, Jiri and Sekatski, Pavel and Sangouard, Nicolas. (2016) Bounding quantum-gravity-inspired decoherence using atom interferometry. Physical Review A , 94. 062111.

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Official URL: http://edoc.unibas.ch/53926/

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Hypothetical models have been proposed in which explicit collapse mechanisms prevent the superposition principle from holding at large scales. In particular, the model introduced by Ellis et al. [J. Ellis et al., Phys. Lett. B 221, 113 (1989)] suggests that quantum gravity might be responsible for the collapse of the wave function of massive objects in spatial superpositions. We consider here a recent experiment reporting on interferometry with atoms delocalized over half a meter for a time scale of 1 s [T. Kovachy et al., Nature (London) 528, 530 (2015)] and show that the corresponding data strongly bound quantum-gravity-induced decoherence and rule it out in the parameter regime considered originally.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Quantum Physics (Sangouard)
UniBasel Contributors:Sangouard, Nicolas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:20 Feb 2017 15:38
Deposited On:20 Feb 2017 15:38

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