Report
Charge-induced energy shift of a single-spin qubit under a magnetic-field gradient
| العنوان: | Charge-induced energy shift of a single-spin qubit under a magnetic-field gradient |
|---|---|
| المؤلفون: | Kobayashi, Takashi, Noiri, Akito, Nakajima, Takashi, Takeda, Kenta, Camenzind, Leon C., Jin, Ik Kyeong, Scappucci, Giordano, Tarucha, Seigo |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Quantum Physics |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Quantum Physics |
| الوصف: | An electron confined by a semiconductor quantum dot (QD) can be displaced by changes in electron occupations of surrounding QDs owing to the Coulomb interaction. For a single-spin qubit in an inhomogeneous magnetic field, such a displacement of the host electron results in a qubit energy shift which must be handled carefully for high-fidelity operations. Here we spectroscopically investigate the qubit energy shift induced by changes in charge occupations of nearby QDs for a silicon single-spin qubit in a magnetic-field gradient. Between two different charge configurations of an adjacent double QD, a spin qubit shows an energy shift of about 4 MHz, which necessitates strict management of electron positions over a QD array. We confirm a correlation between the qubit frequency and the charge configuration by using a postselection analysis. Comment: 15 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2411.16224 |
| رقم الانضمام: | edsarx.2411.16224 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |