Probing Terrestrial Relic Neutrino Charge with Mach-Zehnder Interferometer

Abstract

We propose a novel method to probe the cosmic neutrino background (CNB) which has been shown to be accumulated on the surface of the earth. If such relic neutrino carries non-zero electric charge, Mach-Zehnder interferometer offers a suitable venue to unveil its interaction with photons. For neutrino mass equals to 0.05 eV, the sensitivity reach of our proposal could probe the fractional electric charge of the neutrino ${ϵ}_{\nu }$ as low as $9.3\times 10^{-11},1.6\times 10^{-16}$, and $2.9\times 10^{-22}$ provided that the interferometer operates at standard quantum limit (SQL), the Heisenberg limit as well as super-Heisenberg limit, respectively.

Comments: 14 pages, 4 figures