Phase-Biased Andreev Diffraction Grating
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866918126143143936 |
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| author | Lykkegaard, Magnus R. Dahl, Anders Enevold Flensberg, Karsten Lindemann, Tyler Manfra, Michael J. Marcus, Charles M. |
| author_facet | Lykkegaard, Magnus R. Dahl, Anders Enevold Flensberg, Karsten Lindemann, Tyler Manfra, Michael J. Marcus, Charles M. |
| contents | 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, not to be confused with multiple Andreev reflection. Adding current-carrying taps to the meander allows individual phase control. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_13355 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Phase-Biased Andreev Diffraction Grating Lykkegaard, Magnus R. Dahl, Anders Enevold Flensberg, Karsten Lindemann, Tyler Manfra, Michael J. Marcus, Charles M. Superconductivity Mesoscale and Nanoscale Physics 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, not to be confused with multiple Andreev reflection. Adding current-carrying taps to the meander allows individual phase control. |
| title | Phase-Biased Andreev Diffraction Grating |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2411.13355 |