Academic Journal
أعرض في EDS

Microwave-controlled coupling of Majorana bound states

التفاصيل البيبلوغرافية
العنوان: Microwave-controlled coupling of Majorana bound states
المؤلفون: Thomas L Schmidt, Andreas Nunnenkamp, Christoph Bruder
المصدر: New Journal of Physics, Vol 15, Iss 2, p 025043 (2013)
بيانات النشر: IOP Publishing, 2013.
سنة النشر: 2013
المجموعة: LCC:Science
LCC:Physics
مصطلحات موضوعية: Science, Physics, QC1-999
الوصف: We propose microwave-controlled rotations for qubits realized as Majorana bound states. To this end, we study an inhomogeneous Kitaev chain in a microwave cavity. The chain consists of two topologically nontrivial regions separated by a topologically trivial, gapped region. The Majorana bound states at the interfaces between the left (right) regions and the central region are coupled, and their energies are split by virtual cotunneling processes. The amplitude for these cotunneling processes decreases exponentially with the number of sites of the gapped region, and the decay length diverges as the gap of the topologically trivial region closes. We demonstrate that microwave radiation can exponentially enhance the coupling between the Majorana bound states, both for classical and quantized electric fields. By solving the appropriate Liouville equation numerically, we show that microwaves can drive Rabi oscillations in the Majorana sector. Our model emerges as an effective description of a topological semiconductor nanowire in a microwave cavity. Thus, our proposal provides an experimentally feasible way to obtain full single-qubit control necessary for universal quantum computation with Majorana qubits.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1367-2630
Relation: https://doaj.org/toc/1367-2630
DOI: 10.1088/1367-2630/15/2/025043
URL الوصول: https://doaj.org/article/f9f7f0dcd77d4a03bc4f33d33ef6b72d
رقم الانضمام: edsdoj.f9f7f0dcd77d4a03bc4f33d33ef6b72d
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:13672630
DOI:10.1088/1367-2630/15/2/025043