Asymmetric field photovoltaic effect of neutral atoms

Photovoltaic effect of neutral atoms using inhomogeneous light in a double-trap opened system is studied theoretically. Using asymmetric external driving field to replacing original asymmetric chemical potential of atoms, we create polarization of atom population in the double-trap system. The polarization of atom number distribution induces net current of atoms and works as collected carriers in the cell. The cell can work even under partially coherent light. The whole configuration is described by quantum master equation considering weak tunneling between the system and its reservoirs at finite temperature. The model of neutral atoms could be extended to more general quantum particles in principle.

Automated summary

This study theoretically investigates the photovoltaic effect of neutral atoms using inhomogeneous light in a double-trap opened system. By using asymmetric external driving field, the polarization of atom population is created, resulting in a net current of atoms serving as collected carriers in the cell. The research findings are important for understanding and applying the photovoltaic effect.