An experiment to test the discreteness of time

Marios Christodoulou1,2, Andrea Di Biagio1,3,4, and Pierre Martin-Dussaud4,5,6

1Institute for Quantum Optics and Quantum Information (IQOQI) Vienna, Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria
2Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
3Dipartimento di Fisica, La Sapienza Università di Roma, Piazzale Aldo Moro 5, Roma, Italy
4Aix-Marseille Univ, Université de Toulon, CNRS, CPT, Marseille, France
5Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
6Basic Research Community for Physics e.V., Mariannenstraße 89, Leipzig, Germany

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Abstract

Time at the Planck scale ($\sim 10^{-44} \mathrm{s}$) is an unexplored physical regime. It is widely believed that probing Planck time will remain for long an impossible task. Yet, we propose an experiment to test the discreteness of time at the Planck scale and estimate that it is not far removed from current technological capabilities.

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[6] John Ashmead, "Time dispersion in quantum electrodynamics", arXiv:2211.00202.

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