تقرير
Quantum tomography of electrical currents
| العنوان: | Quantum tomography of electrical currents |
|---|---|
| المؤلفون: | Bisognin, R., Marguerite, A., Roussel, B., Kumar, M., Cabart, C., Chapdelaine, C., Mohammad-Djafari, A., Berroir, J. -M., Bocquillon, E., Plaçais, B., Cavanna, A., Gennser, U., Jin, Y., Degiovanni, P., Fève, G. |
| المصدر: | Nature Communications volume 10, Article number: 3379 (2019) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | In quantum nanoelectronics, time-dependent electrical currents are built from few elementary excitations emitted with well-defined wavefunctions. However, despite the realization of sources generating quantized numbers of excitations, and despite the development of the theoretical framework of time-dependent quantum electronics, extracting electron and hole wavefunctions from electrical currents has so far remained out of reach, both at the theoretical and experimental levels. In this work, we demonstrate a quantum tomography protocol which extracts the generated electron and hole wavefunctions and their emission probabilities from any electrical current. It combines two-particle interferometry with signal processing. Using our technique, we extract the wavefunctions generated by trains of Lorentzian pulses carrying one or two electrons. By demonstrating the synthesis and complete characterization of electronic wavefunctions in conductors, this work offers perspectives for quantum information processing with electrical currents and for investigating basic quantum physics in many-body systems. Comment: Preprint version, supplementary material is available at https://static-content.springer.com/esm/art%3A10.1038%2Fs41467-019-11369-5/MediaObjects/41467_2019_11369_MOESM1_ESM.pdf |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/s41467-019-11369-5 |
| URL الوصول: | http://arxiv.org/abs/2003.10748 |
| رقم الأكسشن: | edsarx.2003.10748 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/s41467-019-11369-5 |
|---|