Bias-Free Optical Isolation from Polarization Chirality in QMU: A Loxodromic Sign Ledger for Polarization Technology

Summary. This paper develops a QMU-native method for quantifying polarized light in the Aether Physics Model (APM) by treating polarization as (i) a ledgered partition of conserved light-transport content and (ii) a mirror-odd chirality control that can couple to loxodromic geometry. The result is a falsifiable sign-ledger that enables polarization-programmable nonreciprocity and a practical pathway toward bias-free optical isolation. What is new. The work contributes three concrete deliverables: A Stokes-like polarization vector S=(S₀,S₁,S₂,S₃) with S₀=ligt (transport content in QMU) and S1,2,3 defined as signed ligt-partitions between analyzer channels. This makes polarization a ledger-native variable that can be swept while holding transport invariant. A dimensional polarization chirality carrierCₚₒₗ = sₕ\,(Aᵤ· curl) = sₕ\,Fq²λC²anchored to Ledger One and mirror-odd like the loxodromic carrierCₗₒₓ=(τgeoλC)(Aᵤ· curl) A sign-ledger extension predicting polarization-programmable nonreciprocity:sgn(Δ gf)=pₖ\,sₗₒₓ\,mᵣₑₘ\,sₕwhere pₖ is propagation-direction sign, sₗₒₓ is geometry handedness sign, mᵣₑₘ is branch (history) sign, and sₕ is helicity sign. Engineering outcome. The paper frames a bias-free optical isolator (polarization diode) as a pseudoscalar logic element whose operating truth table is enforced by discrete sign flips rather than by continuous external bias fields. A near-term architecture is a loxodromic guide plus a reprogrammable chiral boundary (e.g., a tunable circular-dichroism metasurface), with verification by helicity-reversal sign tests and QMU-normalized downscaling fits. Experimental protocol (falsifiable). A Helicity-Reversal Sign Ledger (HRSL) protocol is included:(i) lock transport by enforcing S₀(RCP)=S₀(LCP)=ligtₛₑₜ,(ii) sweep the discrete controls ₖ,sₗₒₓ,mᵣₑₘ,sₕ\,(iii) require sign inversion under any single flip and parity restoration under paired flips,(iv) test magnitude collapse to the QMU scaling template|Δ gf|=A( k,θ)/ r + B( k,θ)/ r² How to cite.Please cite this record for the present paper, and cite the QADI Community DOI Overview and Citation Guide for QADI conventions and community DOI usage.