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相关论文: Disentangling phonons from spins in ion-trap-based…

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We present a route towards the quantum simulation of exotic quantum magnetism in ion traps by exploiting dual relations between different spin models. Our strategy allows one to start from Hamiltonians that can be realized with current…

量子气体 · 物理学 2016-03-24 Tobias Graß , Maciej Lewenstein , Alejandro Bermudez

Recently the question of phonon angular momentum has been raised : phonon angular momentum in a magnetic crystal could play an important role in the angular momentum balance in the Einstein-de Haas effect. This proposition is quite natural…

综合物理 · 物理学 2017-11-15 S C Tiwari

We propose a detailed analysis of datasets generated from simulations of two-dimensional quantum spin systems using the quantum Ising model at absolute zero temperature. Our focus is on examining how fundamental physical properties, energy,…

量子物理 · 物理学 2024-11-13 Rodrigo Carmo Terin

We study electron-acoustic phonon scattering and electron relaxation in quantum rings in the absence and in the presence of external magnetic fields. Electron-phonon interaction is accounted for both the deformation potential and…

其他凝聚态物理 · 物理学 2007-05-23 G. Piacente , G. Q. Hai

The most typical ingredient of topologically protected quantum states are magnetic fluxes. In a system of spins, complex-valued interaction parameters give rise to a flux, if their phases do not add up to zero along a closed loop. Here we…

量子物理 · 物理学 2018-01-24 Tobias Grass , Alessio Celi , Guido Pagano , Maciej Lewenstein

Trapped atomic ion crystals are a leading platform for quantum simulations of spin systems, with programmable and long-range spin-spin interactions mediated by excitations of phonons in the crystal. We describe a complementary approach for…

量子物理 · 物理学 2023-08-02 Or Katz , Christopher Monroe

Phonons are well known to be the main mechanism for the coupling between bright and dark excitons in nonmagnetic semiconductors. Here, we investigate diluted magnetic semiconductors where this process is in direct competition with the…

介观与纳米尺度物理 · 物理学 2019-03-12 Florian Ungar , Moritz Cygorek , Vollrath Martin Axt

We introduce a new quantum embedding method to explore spin-phonon interactions in molecular magnets. This technique consolidates various spin/phonon couplings into a limited number of collective degrees of freedom, allowing for a fully…

量子物理 · 物理学 2024-07-11 Nosheen Younas , Yu Zhang , Andrei Piryatinski , Eric R Bittner

Spin-phonon coupling is the main drive of spin relaxation and decoherence in solid-state semiconductors at finite temperature. Controlling this interaction is a central problem for many disciplines, ranging from magnetic resonance to…

材料科学 · 物理学 2022-08-23 Alessandro Lunghi

Systems of interacting quantum spins show a rich spectrum of quantum phases and display interesting many-body dynamics. Computing characteristics of even small systems on conventional computers poses significant challenges. A quantum…

By employing forces that depend on the internal electronic state (or spin) of an atomic ion, the Coulomb potential energy of a strongly coupled array of ions can be modified in a spin-dependent way to mimic effective quantum spin…

量子物理 · 物理学 2015-06-15 John J. Bollinger , Joseph W. Britton , Brian C. Sawyer

We study the influence of the phonon environment on the electron dynamics in a doped quantum dot molecule. A non-perturbative quantum kinetic theory based on correlation expansion is used in order to describe both diagonal and off-diagonal…

介观与纳米尺度物理 · 物理学 2015-05-20 A. Grodecka-Grad , J. Förstner

We present a system for the simulation of Heisenberg models with spins $s=\frac{1}{2}$ and $s=1$ with a linear crystal of trapped ions. We show that the laser-ion interaction induces a Jaynes-Cummings-Hubbard interaction between the atomic…

量子物理 · 物理学 2015-02-11 Peter A. Ivanov , Naoum I. Karchev , Nikolay V. Vitanov , Dimitris G. Angelakis

In this work, we study and evaluate the impact of a periodic spin-lattice coupling in an Ising-like system on a 2D triangular lattice. Our proposed simple Hamiltonian considers this additional interaction as an effect of preferential phonon…

统计力学 · 物理学 2024-01-30 R. M. L. Nascimento , Claudio J. DaSilva , L. S. Ferreira , A. A. Caparica

Using a combination of first-principles and magnetization-dynamics calculations, we study the effect of the intense optical excitation of phonons on the magnetic behavior in insulating magnetic materials. Taking the prototypical…

强关联电子 · 物理学 2018-06-13 M. Fechner , A. Sukhov , L. Chotorlishvili , C. Kenel , J. Berakdar , N. A. Spaldin

We have calculated spin relaxation rates in parabolic quantum dots due to the phonon modulation of the spin-orbit interaction in presence of an external magnetic field. Both, deformation potential and piezoelectric electron-phonon coupling…

介观与纳米尺度物理 · 物理学 2009-11-10 A. M. Alcalde , Qu Fanyao , G. E. Marques

In this article in the framework of generalized Frolich model we consider electron-spin-phonon system. A parameter of electron-spin-phonon interaction is found. It is shown its interrelation with experiments on isotope-effect on high…

超导电性 · 物理学 2007-05-23 L. Joukovskaya

Phonon exchange with nuclei in the course of fusion reactions that occur in a solid has not been analyzed previously. This problem has become of interest in connection with claims of observations of anomalies in metal deuterides. If the…

其他凝聚态物理 · 物理学 2007-05-23 Irfan Chaudhary , Peter Hagelstein

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

We examine in detail the theory of the intrinsic non-linearities in the dynamics of trapped ions due to the Coulomb interaction. In particular the possibility of mode-mode coupling, which can be a source of decoherence in trapped ion…

量子物理 · 物理学 2016-09-08 Cyrille Marquet , Ferdinand Schmidt-Kaler , Daniel F. V. James