title: Phonon-assisted gain in a semiconductor double quantum dot maser.
abstract: We develop a microscopic model for the recently demonstrated double-quantum-dot 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.
authors.affiliation: Joint Quantum Institute, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.|Joint Center for Quantum Information and Computer Science, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Gullans
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: Y-Y
authors.initials: YY
authors.lastname: Liu
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: J
authors.initials: J
authors.lastname: Stehlik
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.|Department of Physics, University of California, Santa Barbara, California 93106, USA.
authors.forename: J R
authors.initials: JR
authors.lastname: Petta
authors.affiliation: Joint Quantum Institute, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.|Joint Center for Quantum Information and Computer Science, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Taylor