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IQIM Postdoctoral and Graduate Student Seminar

Friday, March 2, 2018
3:00pm to 4:00pm
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East Bridge 114
Spin-coherent dot—cavity electronics
Michael Ferguson, ETH Zurich,

Abstract: Spin-coherent transport in all electronic dot—cavity systems has been recently demonstrated in an experiment with a dot-cavity hybrid implemented in a high-mobility two-dimensional electron gas [Phys. Rev. Lett. 115, 166603 (2015)]. Its spectroscopic signatures have been interpreted in terms of a competition between Kondo-type dot—lead and molecular-type dot—cavity singlet-formation. I will present a theoretical framework which provides a thorough understanding of the physics governing the singlet formation. I will then show how these tools led to the development of a dot—cavity—dot device where distant dots have been coherently coupled. Finally I will give an insight into how this platform can in the future be used to explore complex many-body quantum phase transitions in the Kondo regime.


For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at [email protected].