Requirements on Quantum Superpositions of Macro-Objects for Sensing Neutrinos

• URL: http://arxiv.org/abs/2204.13095v1
• Date: Wed, 27 Apr 2022 17:45:48 GMT
• Title: Requirements on Quantum Superpositions of Macro-Objects for Sensing Neutrinos
• Authors: Eva Kilian, Marko Toro\v{s}, Frank F. Deppisch, Ruben Saakyan, Sougato Bose
• Abstract summary: We examine a macroscopic system in a quantum superposition of two spatially separated localized states as a detector for a stream of weakly interacting relativistic particles. We do this using the explicit example of neutrinos with MeV-scale energy scattering from a solid object via neutral-current neutrino-nucleus scattering. We find that a potentially measurable relative phase between quantum superposed components is obtained for a single gram scale mass placed in a superposition of spatial components separated by $10-14$m under sufficient cooling and background suppression.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We examine a macroscopic system in a quantum superposition of two spatially separated localized states as a detector for a stream of weakly interacting relativistic particles. We do this using the explicit example of neutrinos with MeV-scale energy scattering from a solid object via neutral-current neutrino-nucleus scattering. Presuming the (anti-)neutrino source to be a nuclear fission reactor, we utilize the estimated flux and coherent elastic neutrino-nucleus cross section to constrain the spatial separation ${\Delta}$x and describe the temporal evolution of the sensing system. Particularly, we find that a potentially measurable relative phase between quantum superposed components is obtained for a single gram scale mass placed in a superposition of spatial components separated by $10^{-14}$m under sufficient cooling and background suppression.

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