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Quantum Projects for Undergraduates

The Technion Helen Diller Quantum Center

Unveiling the limitations of energy conversion in quantum systems

Turnover effect in different quantum devices. From left to right: Dubi, Y. et al. Nano Lett. 9, 97–101 (2009); Wang, C., Ren, J. et al. Sci Rep 5, 11787 (2015) and Katz, G. et al. Entropy 18, 186 (2016).

Advisor: David Gelbwaser

Contact: dgelbi@technion.ac.il

Project description:

Quantum energy conversion devices such as solar cells, photosynthetic systems or molecular junctions experience a surprising effect known as the turnover effect: their power increases as a function of the interaction with the energy source but drops to zero for very strong interactions (see figure). As a consequence of the turnover effect, the performance of several non-equilibrium devices is limited by a bound on the electrical current, heat flow, power, or reaction rate. The potential technological applications of these devices call for devising strategies to prevent or minimize the consequences of the turnover effect.  In this project, we will develop numerical and/or analytical models to understand the turnover effect and find ways to avoid it to unleash these devices’ full potential for multiple technological applications.

Prerequisites: Basic course on Quantum mechanics, basic programming skills in any language (python, Mathematica, Matlab, etc)



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