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Condensed Matter > Superconductivity

arXiv:2411.13355 (cond-mat)
[Submitted on 20 Nov 2024]

Title:Phase-Biased Andreev Diffraction Grating

Authors:Magnus R. Lykkegaard, Anders Enevold Dahl, Karsten Flensberg, Tyler Lindemann, Michael J. Manfra, Charles M. Marcus
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Abstract:In optical diffraction, the phase difference between sources in a grating or multi-slit mask is determined by the angle to the imaging screen, yielding the familiar multi-lobed diffraction image. Here, we realize a similar phenomenon in a superconductor-semiconductor hybrid circuit configured to allow Andreev scattering from multiple parallel scatterers. Phase differences between scatterers are set by tapping off of a remote superconducting meander. We investigate arrays with two, three, four, and ten Andreev scatterers, examining local and nonlocal diffraction patterns, finding good agreement with a theory of multiple Andreev scattering. Adding current-carrying taps to the meander allows individual phase control.
Subjects: Superconductivity (cond-mat.supr-con); Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Report number: QDEV 2024
Cite as: arXiv:2411.13355 [cond-mat.supr-con]
  (or arXiv:2411.13355v1 [cond-mat.supr-con] for this version)
  https://doi.org/10.48550/arXiv.2411.13355

Submission history

From: Charles Marcus [view email]
[v1] Wed, 20 Nov 2024 14:28:57 UTC (4,044 KB)
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