(Short Paper16) Super-Intercellular Synchronization and High Light Adaptation in 4-Cell Green Alga Tetrabaena: A Spatially Extended Quantum Computing Model via a 4-QPU Array

Tetrabaena socialis, a four-celled colonial green alga arranged in a planar square, exhibits hydrodynamically synchronized swimming despite each cell possessing autonomous flagella. Furthermore, unlike related species that execute phototactic avoidance migrations under intense light stress, T. socialis adopts a distinct survival strategy by remaining in place and synchronously activating photoprotective and antioxidant defense metabolic pathways across all cells. In this paper, we formulate the four-cell architecture of Tetrabaena as the minimal multi-qubit quantum array composed of four spatially coupled local QPUs. Mediated by 31 P nuclear spin memories in Posner molecules and quantum correlations across cellular junctions, we elucidate the physical mechanism by which the four cells function as a “single quantum system,” executing non-local in-phase synchronization and metabolic optimization independent of classical molecular diffusion or membrane potential propagation delays.