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An all-electrical spin resonance effect in a GaAs few-electron double quantum dot is investigated experimentally and theoretically. The magnetic field dependence and absence of associated Rabi oscillations are consistent with a novel…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 E. A. Laird , C. Barthel , E. I. Rashba , C. M. Marcus , M. P. Hanson , A. C. Gossard

The recent discovery of skyrmions in Cu$_2$OSeO$_3$ has established a new platform to create and manipulate skyrmionic spin textures. We use high-field electron spin resonance (ESR) spectroscopy combining a terahertz free electron laser and…

Strongly Correlated Electrons · Physics 2014-10-15 M. Ozerov , J. Romhányi , M. Belesi , H. Berger , J. -Ph. Ansermet , Jeroen van den Brink , J. Wosnitza , S. A. Zvyagin , I. Rousochatzakis

Electron dynamics in quantum dots manifests itself in spin-flip spectra through electric dipole spin resonance (EDSR). Near a neutrality point separating two different singlet charged states of a double quantum dot, charge dynamics inside a…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Emmanuel I. Rashba

We exploit the pumped spin-current and current noise spectra under equilibrium condition in a single quantum dot connected to two normal leads, as an electrical scheme for detection of the electron spin resonance (ESR) and decoherence. We…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Bing Dong , H. L. Cui , X. L. Lei

An AC electric field applied to a donor-bound electron in a semiconductor modulates the orbital character of its wave function, which affects the electron's spin dynamics via the spin-orbit interaction. Numerical calculations of the spin…

Mesoscale and Nanoscale Physics · Physics 2013-03-05 A. De , Craig E. Pryor , Michael E. Flatté

We propose a new approach to the measurement of a single spin state, based on nuclear magnetic resonance (NMR) techniques and inspired by the coherent control over many-body systems envisaged by Quantum Information Processing (QIP). A…

A theoretical spin-based scheme for performing a variety of quantum computations is presented. It makes use of an array of multiple identical computer vectors of phosphorus-doped silicon where the nuclei serve as logical qubits and the…

Quantum Physics · Physics 2013-02-08 Aharon Blank

Resonance phenomena in solids generally fall into two distinct classes, electric and magnetic, driven, respectively, by the $E$ and $H$ components of the electromagnetic wave incident on the solid. The canonical examples of the two types of…

Mesoscale and Nanoscale Physics · Physics 2019-10-11 E. I. Rashba , V. I. Sheka

Mechanical strain plays a key role in the physics and operation of nanoscale semiconductor systems, including quantum dots and single-dopant devices. Here we describe the design of a nanoelectronic device where a single nuclear spin is…

Mesoscale and Nanoscale Physics · Physics 2021-11-10 Laura A. O'Neill , Benjamin Joecker , Andrew D. Baczewski , Andrea Morello

Starting from the Dirac equation, the relativistic quantum hydrodynamic equations for Dirac electrons on a surface of a three dimensional-topological insulator (TI) are derived and numerically solved to study the spin plasmons. The surface…

Mesoscale and Nanoscale Physics · Physics 2014-05-27 Ya Zhang , Jianwei Cui , Wei Jiang , Lin Yi

Novel many-body and topological electronic phases can be created in assemblies of interacting spins coupled to a superconductor, such as one-dimensional topological superconductors with Majorana zero modes (MZMs) at their ends.…

We demonstrate an alternative nuclear spin resonance using radio frequency (RF) electric field (nuclear electric resonance: NER) instead of magnetic field. The NER is based on the electronic control of electron spins forming a domain…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 N. Kumada , T. Kamada , S. Miyashita , Y. Hirayama , T. Fujisawa

We propose a method based on optically detected magnetic resonance (ODMR) to measure the decoherence time $T_{2}$ of a single electron spin in a semiconductor quantum dot. The electron spin resonance (ESR) of a single excess electron on a…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Oliver Gywat , Hans-Andreas Engel , Daniel Loss , R. J. Epstein , F. M. Mendoza , D. D. Awschalom

A nuclear-spin exchange interaction exists between two ultracold fermionic alkali-earth (like) atoms in the electronic $^{1}{\rm S}_{0}$ state ($g$-state) and $^{3}{\rm P}_{0}$ state ($e$-state), and is an essential ingredient for the…

Quantum Gases · Physics 2018-11-14 Ren Zhang , Peng Zhang

Resonant manipulation of carbon nanotube valley-spin qubits by an electric field is investigated theoretically. We develop a new analysis of electrically driven spin resonance exploiting fixed physical characteristics of the nanotube: a…

Mesoscale and Nanoscale Physics · Physics 2015-03-24 Ying Li , Simon C. Benjamin , G. Andrew D. Briggs , Edward A. Laird

Color centers that enable nuclear-spin control without RF fields offer a powerful route towards simplified and scalable quantum devices. Such capabilities are especially valuable for quantum sensing and computing platforms that already find…

Electrical detection of spins is an essential tool in understanding the dynamics of spins in semiconductor devices, providing valuable insights for applications ranging from optoelectronics and spintronics to quantum information processing.…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 C. C. Lo , M. Urdampilleta , P. Ross , M. F. Gonzalez-Zalba , J. Mansir , S. A. Lyon , M. L. W. Thewalt , J. J. L. Morton

This study demonstrates how the spin quantum dynamics of a single Fe atom adsorbed on Cu(001) can be controlled and manipulated by the vibrations of a nearby copper tip attached to a nano cantilever by virtue of the dynamic magnetic…

High-frequency electron paramagnetic resonance (EPR) studies of the antiferromagnetic Mn-$[3\times 3]$ molecular grid clearly reveal a breaking of the $\Delta S = 0$ selection rule, providing direct evidence for the mixing of spin…

Other Condensed Matter · Physics 2009-11-13 S. Datta , O. Waldmann , A. D. Kent , V. A. Milway , L. K. Thompson , S. Hill

Electron spins in edge or surface modes of topological insulators (TIs) with strong spin-orbit coupling cannot be directly manipulated with microwaves due to the locking of electron spin to its momentum. We show by contrast that a…

Mesoscale and Nanoscale Physics · Physics 2021-07-28 Zekun Zhuang , V. F. Mitrović , J. B. Marston
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