Superradiant Neutrino Lasers from Radioactive Condensates

Superradiance emerges from collective spontaneous emission in optically pumped gases, and is characterized by photon emission enhancements of up to $\frac{1}{4}$⁢𝑁² in an 𝑁 atom system. The gain mechanism derives from correlations developed within the decay medium rather than from stimulated emission as in lasing, so an analog of this process should be possible for fermionic final states. We introduce here the concept of superradiant neutrino emission from a radioactive Bose Einstein condensate, which can form the basis for a superradiant neutrino laser. A plausible experimental realization based on a condensate of electron-capture isotope ⁸³Rb could exhibit effective radioactive decay rates accelerated from 86.2 days to minutes in viably sized rubidium condensates of 10⁶ atoms.. Authors: Jones, Ben J. P. [University of Texas at Arlington, TX (United States)] (ORCID:0000000334008986); Formaggio, Joseph A. [Massachusetts Institute of Technology, Cambridge, MA (United States)] (ORCID:0000000237579883). DOE Contract: SC0011091; SC0019223; SC0024434. Subjects: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Atom lasers; Beta decay; Bose-Einstein condensates; Lasers; Lifetimes & widths; Neutrino oscillations; Neutrinos; Optical coherence; Particle decays; Quantum coherence & coherence measures; Spontaneous emission; Super radiance; Ultracold collisions