A Biosystem Model in Brain for Optomechanical Coupling and Quantum Information Functions

Abstract

Listen

Translate article

Bioelements like tubulin proteins and Microtubules are found to exhibit physical properties, like phonon and photon localization and confinement and resonances at high frequencies. As planar periodic materials with tubulin lattices, MT surfaces act as 2-D materials that can be used to design opto mechanical crystals, in which strongly interacting co-localized photonic -- phononic resonances occur. These conform to physical models reported. It is possible to tune micro cavity resonances over nanometer ranges, in which low power resonant optical excitations are possible with driven mechanical motion, setting the condition for cavity enhanced radiation pressure cooling of micro mechanical oscillators. Given the cytoarchitecture of brain cells and the high levels of metabolic energy expenses in neural cells, it may not be biologically feasible to realize quantum state ground conditions in brain microtubules, due to strong coupling with the thermal environment. But MTs as ionic conductors provide possibilities for microscopic mechanical oscillator in a super position of two optical modes enabling the transfer of optical fields in cavity structures like MTs. This opens the possibility of using mechanically mediated coupling in quantum application, without cooling the material to ground state quantum regime. Such opto mechanically induced transparency will facilitate an optical read out of quantum ionic information states. The mechanical oscillator dark mode of the ion represents a quantum ionic trap, as memory registry, based on its entangled information states. Intrinsic optic signals are associated with it for quantum coherent communication.