Phonon-Assisted Gain in a Semiconductor Double Quantum Dot Maser

TitlePhonon-Assisted Gain in a Semiconductor Double Quantum Dot Maser
Publication TypeJournal Article
Year of Publication2015
AuthorsGullans, M, Liu, Y-Y, Stehlik, J, Petta, JR, Taylor, JM
JournalPhysical Review Letters
Date Published2015/05/13

We develop a microscopic model for the recently demonstrated double quantum dot (DQD) maser. In characterizing the gain of this device we find that, in addition to the direct stimulated emission of photons, there is a large contribution from the simultaneous emission of a photon and a phonon, i.e., the phonon sideband. We show that this phonon-assisted gain typically dominates the overall gain which leads to masing. Recent experimental data are well fit with our model.

Short TitlePhys. Rev. Lett.