It has been observed a quantum state in a one atom thick wire which in a certain energy range behaves like a Majorana fermion. It is a quasiparticle that arises out of the collective behavior of the electrons in superconducting materials. It is probably related to the simulation of the 1D Majorana equation with two Cooper pairs coupled to a 1D superconducting transmission line resonator, where the strong coupling limit can be achieved (see the link above).
What is the effective mass of the Majorana fermion?
If the wire is sufficiently long, the emerging Majorana fermions do not annihilate, and are stable. For certain ranges of the wire length, the newly formed Majorana fermions can annihilate.
What is the order of magnitude of the energy released in the Majorana fermions annihilation? Is it anywhere around 4mc^2 (where m is the electron mass), at least as order of magnitude (this is a guess)?
How does this energy compare with the total energy input assumed in the experiment (for one wire), in order to create these quasiparticles? Can the system be scaled up, for the purpose of energy production (many wires that cyclically host annihilation processes)? Could the phenomenon appear in higher temperature superconductors (in order to decrease the necessary energy input)?