Direct observation of the optical Magnus effect with a trapped ion

• URL: http://arxiv.org/abs/2601.22981v1
• Date: Fri, 30 Jan 2026 13:44:08 GMT
• Title: Direct observation of the optical Magnus effect with a trapped ion
• Authors: Philip Leindecker, Louis P. H. Gallagher, Edgar Brucke, Dominique Zehnder, Luka Milanovic, Matteo Marinelli, Rene Gerritsma, Robert J. C. Spreeuw, Jonathan Home, Cornelius Hempel,
• Abstract summary: We map an optical analog of the Magnus effect, where intrinsic spin-orbit-like coupling of light generates a spin-dependent transverse displacement of the atom-light interaction profile for a $40$Ca$+$ ion.<n>The results establish the physical basis of polarization-gradient interactions relevant to optical tweezer-based quantum control.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We directly observe and spatially map an optical analog of the Magnus effect, where intrinsic spin-orbit-like coupling of light generates a spin-dependent transverse displacement of the atom-light interaction profile for a $^{40}$Ca$^+$ ion. Probed on a quadrupole transition using a tightly focused beam, we observe displacements of the maximum in the profile of the effective interaction by several 100 nm originating from intrinsic longitudinal electric field components beyond the paraxial approximation. The tight focus of the beam induces additional transverse polarization gradients, which we characterize through a phase-sensitive measurement and spatial maps for different beam configurations. The results establish the physical basis of polarization-gradient interactions relevant to optical tweezer-based quantum control.

Related papers

• Modification of Hanle and polarization recovery curves under interplay of hopping and quantum measurement back action [0.0]
  We describe the dependence of the spin polarization of localized electrons on transverse and longitudinal magnetic fields.<n>This allows one to describe a broad range of the experimental results and study the fundamental effects of quantum measurements.
  arXiv  Detail & Related papers  (2025-11-13T13:39:03Z)
• Induced Berry Connection and Photonic Spin Hall Effect in Optical Dirac Theory [0.0]
  We present a field-theoretical model of spin-orbit interaction and photonic spin/orbit Hall effects.<n>Our approach reformulates light propagation along helical paths as solving the Maxwell equations in a ray-based curvilinear coordinate system.<n>We find that the transverse spin of evanescent waves couples with EOAM, revealing that the geometric phase of elliptically polarized light differs from that of circularly polarized light.
  arXiv  Detail & Related papers  (2025-02-03T03:19:56Z)
• Theory of optical spin polarization of axial divacancy and nitrogen-vacancy defects in 4H-SiC [0.0]
  In this work, we theoretically investigate the microscopic magneto-optical properties and spin-dependent optical loops.<n>We show that fine interactions, including spin-orbit coupling and spin-spin interaction, are fully characterized to provide versatile qubit functional parameters.<n>This work not only reveals the mechanism underlying the optical spin polarization but also proposes productive avenues for optimizing quantum information processing tasks.
  arXiv  Detail & Related papers  (2024-09-16T12:31:43Z)
• Observation of Space-Dependent Rotational Doppler Shifts with a Single Ion Probe [0.9785840554068875]
  We present an experiment investigating the rotational Doppler effect using a single trapped ion excited by two copropagating vortex laser beams. We provide a detailed characterization of the phenomenon by deterministically positioning a single ion across the beams.
  arXiv  Detail & Related papers  (2024-07-06T13:47:49Z)
• 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)
• Directional spontaneous emission in photonic crystal slabs [49.1574468325115]
  Spontaneous emission is a fundamental out-of-equilibrium process in which an excited quantum emitter relaxes to the ground state due to quantum fluctuations. One way to modify these photon-mediated interactions is to alter the dipole radiation patterns of the emitter, e.g., by placing photonic crystals near them. Our study delves into the interaction between these directional emission patterns and the aforementioned variables, revealing the untapped potential to fine-tune collective quantum optical phenomena.
  arXiv  Detail & Related papers  (2023-12-04T15:35:41Z)
• Atom interferometry with coherent enhancement of Bragg pulse sequences [41.94295877935867]
  We demonstrate momentum splitting up to 200 photon recoils in an ultra-cold atom interferometer. We highlight a new mechanism of destructive interference of the losses leading to a sizeable efficiency enhancement of the beam splitters.
  arXiv  Detail & Related papers  (2023-05-16T15:00:05Z)
• Magnetic-field-induced cavity protection for intersubband polaritons [52.77024349608834]
  We analyse the effect of a strong perpendicular magnetic field on an intersubband transition in a disordered doped quantum well strongly coupled to an optical cavity. The magnetic field changes the lineshape of the intersubband optical transition due to the roughness of the interface of the quantum well from a Lorentzian to a Gaussian one.
  arXiv  Detail & Related papers  (2022-10-14T18:00:03Z)
• 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)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)
• Photon Condensation and Enhanced Magnetism in Cavity QED [68.8204255655161]
  A system of magnetic molecules coupled to microwave cavities undergoes the equilibrium superradiant phase transition. The effect of the coupling is first illustrated by the vacuum-induced ferromagnetic order in a quantum Ising model. A transmission experiment is shown to resolve the transition, measuring the quantum electrodynamical control of magnetism.
  arXiv  Detail & Related papers  (2020-11-07T11:18:24Z)

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.