Regensburg 2016 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 27: Transport: Quantum Coherence and Quantum Information Systems - Theory 1
(Joint session of HL, MA and TT organized by TT)

TT 27.10: Vortrag

Dienstag, 8. März 2016, 12:00–12:15, H22

Theory of the double Quantum-dot Maser — •Clemens Müller and Thomas M. Stace — ARC Centre of Excellence for Engineered Quantum Systems, The University of Queensland, Brisbane, Australia

We consider a voltage-biased double quantum-dot (DQD) in the transport regime, dipole-coupled to a superconducting microwave cavity [1, 2]. We explore the effect of dissipative coupling of the DQD to a phononic environment and its influence on microwave gain and loss observed in the resonator. To this end, we develop a rate equation based on fourth-order perturbation theory in the dissipative and coherent DQD interactions. We compare our findings with the recent paper Ref.[3], where a different technique based on the Polaron transformation was used.
Y.-Y. Liu, K. D. Petersson, J. Stehlik, J. M. Taylor,

and J. R. Petta, PRL 113, 036801 (2014)
Y.-Y. Liu, J. Stehlik, C. Eichler, M. J. Gullans, J. M. Taylor,

J. R. Petta, Science 347, 285 (2015)
M. J. Gullans, Y.-Y. Liu, J. Stehlik, J. R. Petta, J. M. Taylor,

PRL 114, 196802 (2015)