Reduced Density-Matrix Approach to Strong Matter-Photon Interaction

Reduced density matrix hybrid approach: application to electronic energy transfer.

Electronic energy transfer in the condensed phase, such as that occurring in photosynthetic complexes, frequently occurs in regimes where the energy scales of the system and environment are similar. This situation provides a challenge to theoretical investigation since most approaches are accurate only when a certain energetic parameter is small compared to others in the problem. Here we show t...

Density Matrix From Photon Number Tomography

We provide a simple analytic relation which connects the density operator of the radiation field with the number probabilities. The problem of experimentally ”sampling” a general matrix elements is studied, and the deleterious effects of nonunit quantum efficiency in the detection process are analyzed showing how they can be reduced by using the squeezing technique. The obtained result is parti...

Many-particle density-matrix approach to a quantum dot system for the strong electron accumulation case

We consider the system of an electronic quantum dot with a base set of discrete single-particle levels due to quantization effects in an arbitrarily given attractive potential. Intradot electron-electron interaction is described employing the full many-particle Coulomb interaction Hamiltonian in second quantization. Interaction effects arising from a capacitive response of the environment is in...

The time-dependent two-particle reduced density matrix method: LiH in strong laser fields

Density-matrix-functional calculations for matter in strong magnetic fields: Ground states of heavy atoms.