تقرير
Electrical spin driving by $g$-matrix modulation in spin-orbit qubits
| العنوان: | Electrical spin driving by $g$-matrix modulation in spin-orbit qubits |
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| المؤلفون: | Crippa, Alessandro, Maurand, Romain, Bourdet, Léo, Kotekar-Patil, Dharmraj, Amisse, Anthony, Jehl, Xavier, Sanquer, Marc, Laviéville, Romain, Bohuslavskyi, Heorhii, Hutin, Louis, Barraud, Sylvain, Vinet, Maud, Niquet, Yann-Michel, De Franceschi, Silvano |
| المصدر: | Phys. Rev. Lett. 120, 137702 (2018) |
| سنة النشر: | 2017 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | In a semiconductor spin qubit with sizable spin-orbit coupling, coherent spin rotations can be driven by a resonant gate-voltage modulation. Recently, we have exploited this opportunity in the experimental demonstration of a hole spin qubit in a silicon device. Here we investigate the underlying physical mechanisms by measuring the full angular dependence of the Rabi frequency as well as the gate-voltage dependence and anisotropy of the hole $g$-factors. We show that a $g$-matrix formalism can simultaneously capture and discriminate the contributions of two mechanisms so far independently discussed in the literature: one associated with the modulation of the $g$ factors, and measurable by Zeeman energy spectroscopy, the other not. Our approach has a general validity and can be applied to the analysis of other types of spin-orbit qubits. Comment: Letter format (4 pages, 4 figures). Detailed theory in Supplemenatl Material |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.120.137702 |
| URL الوصول: | http://arxiv.org/abs/1710.08690 |
| رقم الأكسشن: | edsarx.1710.08690 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.120.137702 |
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