Floquet theory of spin dynamics under circularly polarized light pulses

• URL: http://arxiv.org/abs/2204.04130v1
• Date: Fri, 8 Apr 2022 15:36:27 GMT
• Title: Floquet theory of spin dynamics under circularly polarized light pulses
• Authors: O. V. Kibis
• Abstract summary: Within the Floquet theory of periodically driven quantum systems, the nonlinear single-spin dynamics under pulse of a circularly polarized electromagnetic field is analyzed. It is demonstrated that the field, first, lifts the spin degeneracy and, second, the field-induced spin splitting is accompanied by the photon emission at the spitting frequency.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Within the Floquet theory of periodically driven quantum systems, the nonlinear single-spin dynamics under pulse of a circularly polarized electromagnetic field is analyzed. It is demonstrated that the field, first, lifts the spin degeneracy and, second, the field-induced spin splitting is accompanied by the photon emission at the spitting frequency. This two-stage process leads, particularly, to the polarization of spins along angular momentum of the circularly polarized field. As a result, the pulse-induced magnetization appears, what can be observed in state-of the-art measurements.

Related papers

• Anomalous radiation reaction in a circularly polarized field [0.0]
  An anomalous radiation reaction arises from the one-loop QED correction to the photon emission. Possible manifestations of this phenomenon are discussed for electrons in strong laser fields.
  arXiv  Detail & Related papers  (2024-08-14T16:51:55Z)
• Dynamical Reorientation of Spin Multipoles in Silicon Carbide by Transverse Magnetic Fields [0.0]
  Application of weak magnetic fields to the symmetry axis leads to nontrivial behavior caused by dynamical reorientation of the $mathrmV_Si$ spin multipole under optical excitation. Our theoretical calculations reproduce well all sharp features in the spin perpendicular resonance spectra, and shine light on the complex dynamics of spin multipoles in these kinds of solid-state systems.
  arXiv  Detail & Related papers  (2024-04-11T16:59:03Z)
• Photoelectron Polarization Vortexes in Strong-Field Ionization [0.46873264197900916]
  We show that momentum-resolved spin polarization is significant, typically exhibiting a vortex structure relative to the laser polarization axis. The polarization arises from the transfer of spin-orbital coupling in the bound state to the spin-correlated quantum orbits in the continuum. Spin-polarized electron holography is demonstrated, feasible for extracting fine structural information about the atom.
  arXiv  Detail & Related papers  (2024-02-19T04:34:40Z)
• Probing dynamics of a two-dimensional dipolar spin ensemble using single qubit sensor [62.997667081978825]
  We experimentally investigate individual spin dynamics in a two-dimensional ensemble of electron spins on the surface of a diamond crystal. We show that this anomalously slow relaxation rate is due to the presence of strong dynamical disorder. Our work paves the way towards microscopic study and control of quantum thermalization in strongly interacting disordered spin ensembles.
  arXiv  Detail & Related papers  (2022-07-21T18:00:17Z)
• Carrier-envelope-phase and helicity control of electron vortices in photodetachment [0.0]
  Formation of electron vortices and momentum spirals in photodetachment of the H$-$ anion driven by isolated ultrashort laser pulses are analyzed. Carrier-envelope phase and helicity of each individual pulse can be used to actively manipulate and control the vortical pattern in the probability amplitude of photodetachment.
  arXiv  Detail & Related papers  (2022-05-17T22:53:56Z)
• Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear qudit with an electronic ancilla [50.002949299918136]
  We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system suitable to implement quantum computation algorithms. It embeds an electronic spin 1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both characterized by remarkable coherence.
  arXiv  Detail & Related papers  (2021-03-15T21:38:41Z)
• Direct high resolution resonant Raman scattering measurements of InAs quantum dot dynamic nuclear spin polarization states [0.0]
  We report on the direct measurement of the electron spin splitting and the accompanying nuclear Overhauser (OH) field. The observed two-dimensional maps reveal an OH field that has a non-linear dependence on excitation frequency. The magnitude of the field, which is as large as 400 mT, is measured with sub-100 nuclear spin sensitivity.
  arXiv  Detail & Related papers  (2020-11-26T11:41:23Z)
• Strongly entangled system-reservoir dynamics with multiphoton pulses beyond the two-excitation limit: Exciting the atom-photon bound state [62.997667081978825]
  We study the non-Markovian feedback dynamics of a two-level system interacting with the electromagnetic field inside a semi-infinite waveguide. We compare the trapped excitation for an initially excited quantum emitter and an emitter prepared via quantized pulses containing up to four photons.
  arXiv  Detail & Related papers  (2020-11-07T12:56:16Z)
• Energy and momentum conservation in spin transfer [77.34726150561087]
  We show that energy and linear momentum conservation laws impose strong constraints on the properties of magnetic excitations induced by spin transfer. Our results suggest the possibility to achieve precise control of spin transfer-driven magnetization dynamics.
  arXiv  Detail & Related papers  (2020-04-04T15:43:30Z)
• Theory of waveguide-QED with moving emitters [68.8204255655161]
  We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace. We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
  arXiv  Detail & Related papers  (2020-03-20T12:14:10Z)
• Spin current generation and control in carbon nanotubes by combining rotation and magnetic field [78.72753218464803]
  We study the quantum dynamics of ballistic electrons in rotating carbon nanotubes in the presence of a uniform magnetic field. By suitably combining the applied magnetic field intensity and rotation speed, one can tune one of the currents to zero while keeping the other one finite, giving rise to a spin current generator.
  arXiv  Detail & Related papers  (2020-01-20T08:54:56Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.