1203.6268 (P. Kaer et al.)

Microscopic theory of indistinguishable single-photon emission from a
quantum dot coupled to a cavity: The role of non-Markovian phonon-induced
decoherence    [PDF]

P. Kaer, P. Lodahl, A. -P. Jauho, J. Mork

We study the fundamental limit on single-photon indistinguishability imposed by decoherence due to phonon interactions in semiconductor quantum dot-cavity QED systems. Employing a numerically exact 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.

View original: http://arxiv.org/abs/1203.6268