Spin-Selective Resonant Tunneling Induced by Rashba Spin-Orbit Interaction in Semiconductor Nanowire

作     者：J. Pawłowski G. Skowron P. Szumniak S. Bednarek 

作者机构：Department of Theoretical Physics Wrocław University of Science and Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland Faculty of Physics and Applied Computer Science AGH University of Science and Technology Kraków Poland 

出 版 物：《Physical Review Applied》 (Phys. Rev. Appl.)

年 卷 期：2021年第15卷第5期

页      面：054066-054066页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：European Commission, EC Fundacja na rzecz Nauki Polskiej, FNP European Regional Development Fund, ERDF Wroclawskie Centrum Sieciowo-Superkomputerowe, Politechnika Wroclawska, WCSS, (520) Wroclawskie Centrum Sieciowo-Superkomputerowe, Politechnika Wroclawska, WCSS 

主　　题：Optoelectronics Quantum information with solid state qubits Quantum sensing Rashba coupling III-V semiconductors Nanowires Quantum dots Microwave techniques 

摘      要：We consider a single electron confined within a quantum wire in a system of two electrostatically induced quantum dots defined by nearby gates. A time-varying electric field, of single gigahertz frequency, perpendicular to the quantum wire, is used to induce Rashba coupling and enable spin-dependent resonant tunneling of the electron between two adjacent potential wells with fidelity over 99.5%. This effect can be used for high-fidelity all-electric electron-spin initialization or readout in a spin-based quantum computer. In contrast to other spin-initialization methods, our technique can be performed adiabatically without an increase in the energy of the electron. Our simulations are supported by realistic self-consistent time-dependent Poisson-Schrödinger calculations.