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One fundamental requirement for quantum computation is to perform universal manipulations of quantum bits at rates much faster than the qubit's rate of decoherence. Recently, fast gate operations have been demonstrated in logical spin…

Mesoscale and Nanoscale Physics · Physics 2010-09-28 Sandra Foletti , Hendrik Bluhm , Diana Mahalu , Vladimir Umansky , Amir Yacoby

Topological magnons, quantized spin waves featuring nontrivial boundary modes, present a promising route toward lossless information processing. Realizing practical devices typically requires magnons excited in a controlled manner to enable…

Mesoscale and Nanoscale Physics · Physics 2026-05-26 Xueqing Wan , Quanchao Du , Jinlian Lu , Zhenlong Zhang , Jinyang Ni , Lei Zhang , Zhijun Jiang , Laurent Bellaiche

The magnetization orientation of a nanoscale ferromagnet can be manipulated using an electric current via the spin transfer effect. Time domain measurements of nanopillar devices at low temperatures have directly shown that magnetization…

Other Condensed Matter · Physics 2009-04-27 Samir Garzon , Longfei Ye , Richard A. Webb , Thomas M. Crawford , Mark Covington , Shehzaad Kaka

Molecular spintronics is made possible by the coupling between electronic configuration and magnetic po- larization of the molecules. For control and application of the individual molecular states it is necessary to both read and write…

Mesoscale and Nanoscale Physics · Physics 2016-04-27 T. Saygun , J. Bylin , H. Hammar , J. Fransson

Spin decoherence poses a significant challenge in molecular magnets, with the nuclear spin bath serving as a prominent source. Intriguingly, spin qubits at the clock transition exhibit remarkable insensitivity to the surrounding nuclear…

Quantum Physics · Physics 2025-10-14 Xiao Chen , Haechan Park , Silas Hoffman , Shuanglong Liu , Hai-Ping Cheng

Controlling electron spins strongly coupled to magnetic and nuclear spins in solid state systems is an important challenege in the field of spintronics and quantum computation. We show here that electron droplets with no net spin in…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 Ramin M. Abolfath , Marek Korkusinski , Thomas Brabec , Pawel Hawrylak

This article gives an overview on recent theoretical progress in controlling the charge and spin dynamics in low-dimensional electronic systems by means of ultrashort and ultrabroadband electromagnetic pulses. A particular focus is put on…

Mesoscale and Nanoscale Physics · Physics 2017-02-15 Andrey S. Moskalenko , Zhen-Gang Zhu , Jamal Berakdar

Transporting ensembles of electrons over long distances without losing their spin polarization is an important benchmark for spintronic devices. It requires usually to inject and to probe spin polarized electrons in conduction channels…

Mesoscale and Nanoscale Physics · Physics 2017-06-28 B. Bertrand , S. Hermelin , S. Takada , M. Yamamoto , S. Tarucha , A. Ludwig , A. D. Wieck , C. Bäuerle , T. Meunier

Motion of electrons can influence their spins through a fundamental effect called spin-orbit interaction. This interaction provides a way to electrically control spins and as such lies at the foundation of spintronics. Even at the level of…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 S. Nadj-Perge , S. M. Frolov , E. P. A. M. Bakkers , L. P. Kouwenhoven

The intense interest in spin-based quantum information processing has caused an increasing overlap between two traditionally distinct disciplines, such as magnetic resonance and nanotechnology. In this work we discuss rigourous design…

Mesoscale and Nanoscale Physics · Physics 2013-01-24 J. P. Dehollain , J. J. Pla , E. Siew , K. Y. Tan , A. S. Dzurak , A. Morello

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

Electrically manipulating the quantum properties of nano-objects, such as atoms or molecules, is typically done using scanning tunnelling microscopes and lateral junctions. The resulting nanotransport path is well established in these model…

The loss of information about the relative phase between two quantum states, known as decoherence, strongly limits resolution in electron paramagnetic spectroscopy and hampers the use of molecules for quantum information processing. At low…

Quantum Physics · Physics 2025-04-28 Conor Ryan , Valerio Briganti , Cathal Hogan , Mark O'Neill , Alessandro Lunghi

Controlling photon emission by single quantum emitters with nanostructures is crucial for scalable on-chip quantum information processing. Nowadays nanoresonators can affect the lifetime of emitters and ultimately induce strong coupling…

Quantum Physics · Physics 2014-11-26 B. le Feber , N. Rotenberg , L. Kuipers

The feasibility of high-fidelity single-qubit operations of a hole spin in a quantum dot molecule by electric g tensor control is demonstrated. Apart from a constant external magnetic field the proposed scheme allows for an exclusively…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Robert Roloff , Thomas Eissfeller , Peter Vogl , Walter Pötz

We investigate the electric manipulation of a single electron spin in a single gate-defined quantum dot. We observe that so-far neglected differences between the hyperfine and spin-orbit mediated electric dipole spin resonance conditions…

Quantum Physics · Physics 2013-06-27 M. Shafiei , K. C. Nowack , C. Reichl , W. Wegscheider , L. M. K. Vandersypen

We suggest an architecture for quantum computing with spin-pair encoded qubits in silicon. Electron-nuclear spin-pairs are controlled by a dc magnetic field and electrode-switched on and off hyperfine interaction. This digital processing is…

Quantum Physics · Physics 2009-11-07 A. J. Skinner , M. E. Davenport , B. E. Kane

Magnetic skyrmions are vortex-like, swirls of magnetisation whose topological protection and particle-like nature have suggested them to be suitable for a number of novel spintronic devices. One such application is skyrmionic computing,…

Nuclear spins of dopant atoms in semiconductors are promising candidates as quantum bits, due to the long lifetime of their quantum states. Conventionally, coherent control of nuclear spins is done using ac magnetic fields. Using the…

Mesoscale and Nanoscale Physics · Physics 2018-06-27 Péter Boross , Gábor Széchenyi , András Pályi

The properties of quantum systems interacting with their environment, commonly called open quantum systems, can be strongly affected by this interaction. While this can lead to unwanted consequences, such as causing decoherence in qubits…