Non-adiabatic dynamics of strongly driven diffusive Josephson junctions

phys.org | 10/31/2019 | Staff
madalina09madalina09 (Posted by) Level 4
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Understanding how microwave absorption changes the transport properties of diffusive Josephson junctions is at the forefront of interest in the quantum transport community. It is especially relevant for current efforts to address the current-phase relation in topological Josephson junctions, and more generally, the microwave transport in quantum devices.

Researchers from the University of Paris-Saclay, the University of Regensburg (Germany) and the University of Jyvaskyla; (Finland) have delivered a combined experimental and theoretical work revealing the profound nature of quantum transport in strongly driven diffusive Josephson junctions. Results are published in Physical Review Research in October.

Temperatures - Superconductors - Radiation - Energy - Energy

At sufficiently low temperatures, superconductors cannot absorb microwave radiation of energy smaller than the superconducting energy gap D. In Josephson weak links, where two superconductors (S) are weakly coupled through a long diffusive metallic wire (N), radiation can be absorbed in N because the induced gap in...
(Excerpt) Read more at: phys.org
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