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相关论文: Spin-hybrid-phonon resonance in anisotropic quantu…

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Achieving control over the electron spin in quantum dots (artificial atoms) or real atoms promises access to new technologies in conventional and in quantum information processing. Here we review our proposal for quantum computing with…

介观与纳米尺度物理 · 物理学 2009-11-07 Vitaly N. Golovach , Daniel Loss

We investigate the spin-current absorption induced by an inhomogeneous spin-orbit coupling due to impurities in metals. We consider the system with spin currents driven by the electric field or the spin accumulation. The resulting diffusive…

介观与纳米尺度物理 · 物理学 2015-06-04 Kazuhiro Tsutsui , Kazuhiro Hosono , Takehito Yokoyama

Electron transport in a finite one dimensional quantum spin chain (with ferromagnetic exchange) is studied within an $s-d$ exchange Hamiltonian. Spin transfer coefficients strongly depend on the sign of the $s-d$ exchange constant. For a…

介观与纳米尺度物理 · 物理学 2009-11-07 Y. Avishai , Y. Tokura

A single confined spin interacting with a solid-state environment has emerged as one of the fundamental paradigms of mesoscopic physics. In contrast to standard quantum optical systems, decoherence that stems from these interactions can in…

We describe a theoretical framework for the interpretation of time-resolved phonon absorption experiments carried out in the fractional quantum Hall regime of a magnetically quantized two-dimensional electron system (2des). The only phonons…

介观与纳米尺度物理 · 物理学 2009-10-31 Keith A. Benedict , R. K. Hills , C. J. Mellor

Raman spectra obtained by the inelastic scattering of light by crystalline solids contain contributions from first-order vibrational processes (e.g. the emission or absorption of one phonon, a quantum of vibration) as well as higher-order…

材料科学 · 物理学 2017-08-22 Yannick Gillet , Stefan Kontur , Matteo Giantomassi , Claudia Draxl , Xavier Gonze

We study the effect of phonons on a proposed scheme for the direct measurement of two-electron spin states in a double quantum dot by monitoring the the noise of the current flowing through a quantum point contact coupled to one of the…

量子物理 · 物理学 2015-04-01 Katarzyna Roszak , Łukasz Marcinowski , Paweł Machnikowski

Asymmetrical horizontal interdot coupling was demonstrated to exist in a system of a single plane of self-assembled CdTe/ZnTe quantum dots. Photoluminescence excitation (PLE), second order photon correlation and optical orientation were…

其他凝聚态物理 · 物理学 2009-06-12 T. Kazimierczuk , J. Suffczynski , P. Wojnar , A. Golnik , J. A. Gaj , P. Kossacki

Phonon-induced spin relaxation rates in quantum dots are studied as function of in-plane and perpendicular magnetic fields, temperature and electric field, for different dot sizes. We consider Rashba and Dresselhaus spin-orbit mixing in…

介观与纳米尺度物理 · 物理学 2009-11-10 C. F. Destefani , Sergio E. Ulloa

This article derives an electron-phonon interaction suitable for interpreting ultrasonic attenuation measurements in the ruthenate and cuprate superconductors. The huge anisotropy found experimentally (Lupien et al., 2001) in Sr2RuO4 in the…

超导电性 · 物理学 2009-11-07 M. B. Walker , M. F. Smith , K. V. Samokhin

We have studied the dissipative dynamics of a driven electronic spin trapped in a quantum dot. We consider the dissipative mechanism as due to the indirect coupling of the electronic spin to acoustic phonons via the…

介观与纳米尺度物理 · 物理学 2007-05-23 Frederico Brito , Harry Westfahl , Amir O. Caldeira , Gilberto Medeiros-Ribeiro

Point contacts between high anisotropy ferromagnetic SmCo5 and normal metal Cu are used to achieve a strong spin-population inversion in the contact core. Subjected to microwave irradiation in resonance with the Zeeman splitting in Cu, the…

Understanding the effect of vibrations in optically active nano systems is crucial for successfully implementing applications in molecular-based electro-optical devices, quantum information communications, single photon sources, and…

In a polar solid, electrons or other charge carriers can interact with the phonons of the ionic lattice, leading to the formation of polaron quasiparticles. The optical conductivity and optical absorption spectrum of a material are affected…

材料科学 · 物理学 2023-01-04 Matthew Houtput , Jacques Tempere

Electron spins and photons are complementary quantum-mechanical objects that can be used to carry, manipulate and transform quantum information. To combine these resources, it is desirable to achieve the coherent coupling of a single spin…

介观与纳米尺度物理 · 物理学 2015-09-15 J. J. Viennot , M. C. Dartiailh , A. Cottet , T. Kontos

We theoretically demonstrate an orthogonal Einstein-de Haas effect, where the rotation of ferromagnetic materials is caused by the change of magnetization in the direction orthogonal to the rotation axis. This amounts to an anisotropic…

介观与纳米尺度物理 · 物理学 2026-01-27 Rui Xue , Zhenhua Qiao , Yang Gao , Qian Niu

A recently discovered mechanism of electric dipole spin resonance, mediated by the hyperfine interaction, is investigated experimentally and theoretically. The effect is studied using a spin-selective transition in a GaAs double quantum…

介观与纳米尺度物理 · 物理学 2015-05-13 E. A. Laird , C. Barthel , E. I. Rashba , C. M. Marcus , M. P. Hanson , A. C. Gossard

Quantum spin fluctuations provide a unique way to study spin dynamics without system perturbation. Here we put forward an optical resonance shift spin noise spectroscopy as a powerful tool to measure the spin noise of various systems from…

介观与纳米尺度物理 · 物理学 2020-07-01 D. S. Smirnov , K. V. Kavokin

We study the impacts of the magnetic field direction on the spin-manipulation and the spin-relaxation in a one-dimensional quantum dot with strong spin-orbit coupling. The energy spectrum and the corresponding eigenfunctions in the quantum…

介观与纳米尺度物理 · 物理学 2018-07-19 Zhi-Hai Liu , Rui Li

To describe the interaction of molecular vibrations with electrons at a quantum dot contacted to metallic leads, we extend an analytical approach that we previously developed for the many-polaron problem. Our scheme is based on an…

强关联电子 · 物理学 2015-05-13 J Loos , T Koch , A Alvermann , A R Bishop , H Fehske