Parity-Sector Signatures in Ultraweak Photon Emission from Driven-Dissipative Majorana Spin Systems

We present a minimal driven–dissipative model in which a long-lived spin-correlated fermionic subspace is represented by Majorana operators and a Z2 parity, and cou- ples to the electromagnetic field through dipolar and spin–orbit–assisted interac- tions. Parity-sensitive relaxation channels imprint the internal sector onto emitted photons, producing polarization- and helicity-resolved structure beyond generic lu- minescence. Using a Lindblad master equation with periodic modulation, we per- form numerical simulations and compute polarization-resolved emission spectra, Floquet sidebands, and photon correlations g(2)(τ ). The model predicts magnetic- field-dependent polarization asymmetries, drive-locked sidebands, and polarization cross-correlators accessible with polarization-resolved Hanbury Brown–Twiss de- tection. These signatures provide falsifiable discriminants for assessing whether Majorana-parity dynamics can contribute to reported ultraweak photon emission.