Quantum Simulating the Electron Transport in Quantum Cascade Laser Structures

Ultracold fermionic atoms are proposed to be used in 1D optical lattices quantum simulate the electronic transport cascade laser (QCL) structures. The competition between coherent tunneling among (and within) wells and dissipative decay at basis of lasing is discussed. In order validate simulation scheme, such quantitatively addressed a simplified model. existence optimal relationships model parameters shown, maximizing particle current, population inversion (or their product), stimulated emission rate. This substantiates concept emulating QCL operation mechanisms cold-atom lattice simulators, laying groundwork for addressing open questions, as impact electron–electron scattering origin transport-induced noise, design new-generation QCLs.