Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Ferrón, Alejandro"'
The electric control of quantum spin chains has been an outstanding goal for the few last years due to its potential use in technologies related to quantum information processing. In this work, we show the feasibility of the different steps necessary
Externí odkaz:
http://arxiv.org/abs/2408.06936
Quantum control techniques play an important role in manipulating and harnessing the properties of different quantum systems, including isolated atoms. Here, we propose to achieve quantum control over a single on-surface atomic spin using Landau-Zene
Externí odkaz:
http://arxiv.org/abs/2404.19036
The pretty good transmission scenario implies that the probability of sending one excitation from one extreme of a spin chain to the other can reach values arbitrarily close to the unity just by waiting a time long enough. The conditions that ensure
Externí odkaz:
http://arxiv.org/abs/2309.02207
Electron-spin resonance carried out with scanning tunneling microscopes (ESR-STM) is a recently developed experimental technique that is attracting enormous interest on account of its potential to carry out single-spin on-surface resonance with subat
Externí odkaz:
http://arxiv.org/abs/2212.13471
Autor:
Phark, Soo-hyon, Bui, Hong T., Ferrón, Alejandro, Fernández-Rossier, Joaquin, Reina-Gálvez, Jose, Wolf, Christoph, Wang, Yu, Yang, Kai, Heinrich, Andreas J., Lutz, Christopher P.
Coherent control of individual atomic and molecular spins on surfaces has recently been demonstrated by using electron spin resonance (ESR) in a scanning tunneling microscope (STM). Here we present a combined experimental and modeling study of the ES
Externí odkaz:
http://arxiv.org/abs/2212.13380
Publikováno v:
J. Phys. A: Math. Theor. 55 405302 (2022)
We construct the exact solution for a family of one-half spin chains explicitly. The spin chains Hamiltonian corresponds to an isotropic Heisenberg Hamiltonian, with staggered exchange couplings that take only two different values. We work out the ex
Externí odkaz:
http://arxiv.org/abs/2206.14230
The dynamical behaviour of the quantum state of different quantum spin chains, with designed site dependent interaction strengths, is analyzed when the initial state belongs to the one excitation subspace. It is shown that the inhomogeneous chains ar
Externí odkaz:
http://arxiv.org/abs/2112.15512
Publikováno v:
Physics Letters A Volume 449, 14 October 2022, 128362
Using a global optimization algorithm we obtain spin chains with site-dependent exchange coefficients which allow almost perfect quantum state transfer between the extremes of the chains without any further time-dependent external control. We conside
Externí odkaz:
http://arxiv.org/abs/2101.03194
The Quantum Speed Limit can be found in many different situations, in particular in the propagation of information through quantum spin chains. In homogeneous chains it implies that taking information from one extreme of the chain to the other will t
Externí odkaz:
http://arxiv.org/abs/2005.07819
Autor:
Ferrón, Alejandro, Rodríguez, Santiago A., Gómez, Sergio S., Lado, Jose L., Fernández-Rossier, Joaquín
Publikováno v:
Phys. Rev. Research 1, 033185 (2019)
We address the problem of electronic and nuclear spin resonance of an individual atom on a surface driven by a scanning tunnelling microscope. Several mechanisms have been proposed so far, some of them based on the modulation of exchange and crystal
Externí odkaz:
http://arxiv.org/abs/1909.07942