High efficiency deterministic Josephson Vortex Ratchet
M. Beck, E. Goldobin, M. Neuhaus, M. Siegel, R. Kleiner, D. Koelle

TL;DR
This paper experimentally studies a Josephson vortex ratchet with high efficiency, demonstrating quantized rectified voltage, chaos, and voltage reversal under various driving conditions in an asymmetric potential.
Contribution
It introduces a highly efficient Josephson vortex ratchet with a novel asymmetric potential and explores its behavior under different driving forces, including quantization and chaos phenomena.
Findings
Efficiency up to 91% in fluxon rectification
Quantized rectified voltage under high-frequency drive
Observation of chaos and voltage reversal at high frequencies
Abstract
We investigate experimentally a Josephson vortex ratchet -- a fluxon in an asymmetric periodic potential driven by a deterministic force with zero time average. The highly asymmetric periodic potential is created in an underdamped annular long Josephson junction by means of a current injector providing efficiency of the device up to 91%. We measured the ratchet effect for driving forces with different spectral content. For monochromatic high-frequency drive the rectified voltage becomes quantized. At high driving frequencies we also observe chaos, sub-harmonic dynamics and voltage reversal due to the inertial mass of a fluxon.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
