Nielsen, Per Kær1; Lodahl, Peter6; Jauho, Antti-Pekka5; Mørk, Jesper1
1 Department of Photonics Engineering, Technical University of Denmark2 Nanophotonics Theory and Signal Processing, Department of Photonics Engineering, Technical University of Denmark3 Department of Micro- and Nanotechnology, Technical University of Denmark4 Theoretical Nanotechnology, Department of Micro- and Nanotechnology, Technical University of Denmark5 Center for Nanostructured Graphene, Center, Technical University of Denmark6 Risø National Laboratory for Sustainable Energy, Technical University of Denmark
The role of non-Markovian phonon-induced decoherence
We study the fundamental limit on single-photon indistinguishability imposed by decoherence due to phonon interactions in semiconductor quantum dot-cavity quantum electrodynamics systems. Employing an exact diagonalization approach we find large differences compared to standard methods. An important finding is that short-time non-Markovian effects limit the maximal attainable indistinguishability. The results are explained using a polariton picture that yields valuable insight into the phonon-induced dephasing dynamics.
Physical Review B (condensed Matter and Materials Physics), 2013, Vol 87, Issue 8