تقرير
Transport signatures of quasiparticle poisoning in a Majorana island
| العنوان: | Transport signatures of quasiparticle poisoning in a Majorana island |
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| المؤلفون: | Albrecht, S. M., Hansen, E. B., Higginbotham, A. P., Kuemmeth, F., Jespersen, T. S., Nygård, J., Krogstrup, P., Danon, J., Flensberg, K., Marcus, C. M. |
| المصدر: | Phys. Rev. Lett. 118, 137701 (2017) |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter Quantum Physics |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Superconductivity, Quantum Physics |
| الوصف: | We investigate effects of quasiparticle poisoning in a Majorana island with strong tunnel coupling to normal-metal leads. In addition to the main Coulomb blockade diamonds, "shadow" diamonds appear, shifted by 1e in gate voltage, consistent with transport through an excited (poisoned) state of the island. Comparison to a simple model yields an estimate of parity lifetime for the strongly coupled island (~ 1 {\mu}s) and sets a bound for a weakly coupled island (> 10 {\mu}s). Fluctuations in the gate-voltage spacing of Coulomb peaks at high field, reflecting Majorana hybridization, are enhanced by the reduced lever arm at strong coupling. In energy units, fluctuations are consistent with previous measurements. Comment: includes supplementary material |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.118.137701 |
| URL الوصول: | http://arxiv.org/abs/1612.05748 |
| رقم الأكسشن: | edsarx.1612.05748 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.118.137701 |
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