Coupling Quantum Emitters to Graphene Plasmons

In this project we address the long-standing problem of coupling quantum emitters to graphene plasmons. The realization of such a hybrid quantum system represents a major step forward for quantum technologies, as it enables ultrafast quantum operations using the strong electromagnetic field of the plasmon. We investigate methods to exploit the coupling between quantum emitters and graphene plasmons for fast quantum operations like entanglement generation.

Our work includes computer simulations, time-resolved spectroscopic measurements of quantum emitters and the nanofabrication of graphene. In the computer simulations we demonstrate a novel method for entanglement generation by means of plasmon-mediated interactions between quantum emitters. In the experimental part of the project, we have carried out spectroscopic measurements to select the most suitable kind of quantum emitter for the hybrid quantum system, following the requirements of narrow inhomogeneous broadening. Also, using magneto-optical Kerr spectroscopy, in combination with numerical Stoner-Wohlfarth model, we have design an experimental method in which the coupling of quantum emitters to plasmonic cavities can be tested by assessing the populations of Zeeman sublevels.

Individual fellowship (March 2015 - February 2017) 

Project Number: 660732

© 2016 Daniel Cano
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