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Phonon Assisted Gain in a Semiconductor Quantum Dot Maser



Michael Gullans, Yinyiu Liu, George Stehlik, Jason Petta, Jacob M. Taylor


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 transitions that involve the simultaneous emission of a photon and a phonon. This phonon assisted process controls the masing transition because it dominates the gain in the region of large population inversion. These theoretical results are compared to experiment and good agreement is found.
Physical Review Letters


double quantum dot, cavity quantum electrodynamics, maser


Gullans, M. , Liu, Y. , Stehlik, G. , Petta, J. and Taylor, J. (2015), Phonon Assisted Gain in a Semiconductor Quantum Dot Maser, Physical Review Letters, [online], (Accessed June 21, 2024)


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Created May 13, 2015, Updated November 10, 2018