Absorption of hybrid fibre modes by Cs atoms in quadrupole transitions

• URL: http://arxiv.org/abs/2110.09963v4
• Date: Wed, 18 Oct 2023 20:22:57 GMT
• Title: Absorption of hybrid fibre modes by Cs atoms in quadrupole transitions
• Abstract summary: We evaluate the rate of the absorption of an optical nanofiber mode by a Cs atom in an electric quadrupole transition. Close to the fiber, however, the absorption rate for the input power chosen can be two orders of magnitude larger than the quadrupole de-excitation rate.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We evaluate the rate of the absorption of an optical nanofiber mode by a Cs atom in an electric quadrupole transition. With the Cs atom localized near the outer surface of the optical nano-fiber, an interaction occurs between the atomic quadrupole tensor components and the gradients of the vector components of the electric field of a hybrid fiber mode. The absorption rate is evaluated as a function of the radial position of the atom from the fiber axis, assuming a specific value of the laser power and we use experimentally accessible parameters. We find that the absorption of the hybrid modes by the Cs atom decreases as the atom recedes away from the fiber axis and formally vanishes at sufficiently large radial distances. Close to the fiber, however, the absorption rate for the input power chosen can be two orders of magnitude larger than the quadrupole de-excitation rate despite the moderate power used.

Related papers

• Spectroscopic measurement of the Casimir-Polder force in the intermediate regime [0.0]
  Casimir-Polder (CP) effect -- the force between a neutral atom and an uncharged conducting plate in empty space -- is an intriguing consequence of quantum vacuum fluctuations.<n>We probe the CP-induced kHz-frequency shift of ultracold atoms confined by a magic-wavelength optical lattice at 189(2)nm from the surface.<n>This paves the way for studying the CP effect across various surface properties and geometries.
  arXiv  Detail & Related papers  (2026-04-16T07:30:57Z)
• Energy-Transfer-Enhanced Emission and Quantum Sensing of VB- Defects in hBN-PbI2 Heterostructures [31.458406135473805]
  Spin defects in two-dimensional materials hold significant potential for quantum information technologies and sensing applications.<n>This work establishes a proof-of-concept for amplifying weak defect signals in nanomaterials, highlighting a new strategy for engineering their optical and magnetic responses.
  arXiv  Detail & Related papers  (2026-02-02T16:01:45Z)
• Bose condensation and Bogoliubov excitation in resonator-embedded superconducting qubit network [53.72731614116211]
  Superconducting qubit networks (SQNs) embedded in a low-dissipative resonator are a promising device.<n>A quantum ac Stark effect provides by coupling between an SQN and microwave photons of a resonator, leads to a strong nonlinear interaction between photons.
  arXiv  Detail & Related papers  (2026-01-21T15:43:43Z)
• Optical nonlinearity of cold atomic ensemble driven by strong coherent field in a saturation regime [0.0]
  In a limit of dilute atomic gas, the dynamics of each atom follows the Mollow-type nonlinear excitation regime.<n>We argue that in such a medium the optical nonlinearity and, in particular, its parametric part could be significantly magnified by manipulating both the coherent pump and the sample density.
  arXiv  Detail & Related papers  (2026-01-05T14:30:57Z)
• Robust Surface-Induced Enhancement of Exciton Transport in Magic-Angle-Oriented Molecular Aggregates [23.22864925146285]
  Recent reports show that light-matter interactions can significantly enhance exciton transport.<n>We simulate exciton transport within a chromophore array arranged in a magic-angle configuration in proximity to a silver surface.
  arXiv  Detail & Related papers  (2025-07-18T08:59:48Z)
• Donor-Acceptor Pairs near Silicon Carbide surfaces [41.94295877935867]
  Donor-acceptor pairs (DAPs) in wide-bandgap semiconductors are promising platforms for the realization of quantum technologies. We show how the presence of surfaces influence the stability and optical properties of Al-N DAPs in SiC. We introduce the concept of surface-defect pairs (SDPs), where an electron-hole pair is generated between a near-surface defect and an occupied surface state.
  arXiv  Detail & Related papers  (2025-04-14T17:58:59Z)
• Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride [31.114245664719455]
  Electronic spin defects in van der Waals (vdW) materials provide a promising platform for quantum sensing.<n>Here, we use time-resolved photoluminescence (PL) measurements with a nanosecond rise-time nm laser to determine the singlet state lifetime of a $V-_B$ ensemble in neutron-irradiated, sub-micron-size flakes of hBN.<n>We probe the PL dynamics of thermal and optically polarized electronic spin distributions of the $V-_B$ ensemble in a single sub-micron hBN flake, and fit our results to
  arXiv  Detail & Related papers  (2025-04-07T17:42:43Z)
• A planar rotor trapped and coupled to the vibrational modes of an ion crystal [32.97208255533144]
  Planar rotors can be realized by confining molecular ions or charged nanoparticles together with atomic ions in a Paul trap. We study the case of molecular ions or charged nanoparticles that have an electric dipole moment which couples to modes of the common vibrational motion in the trap.
  arXiv  Detail & Related papers  (2025-04-01T09:48:15Z)
• Quantum-enabled Rydberg atomic polarimetry of radio-frequency fields [37.69303106863453]
  Rydberg atoms efficiently link photons between the radio-frequency (RF) and optical domains. We investigate spectroscopic signatures owing to the angular momentum quantization of the atomic states. Our study adds important insights into the prospects of Rydberg atomic polarimetry for quantum metrological electric field characterization.
  arXiv  Detail & Related papers  (2025-03-23T09:13:36Z)
• Electron-Electron Interactions in Device Simulation via Non-equilibrium Green's Functions and the GW Approximation [71.63026504030766]
  electron-electron (e-e) interactions must be explicitly incorporated in quantum transport simulation. This study is the first one reporting large-scale atomistic quantum transport simulations of nano-devices under non-equilibrium conditions.
  arXiv  Detail & Related papers  (2024-12-17T15:05:33Z)
• Quantum optical scattering by macroscopic lossy objects: A general approach [55.2480439325792]
  We develop a general approach to describe the scattering of quantum light by a lossy macroscopic object placed in vacuum. We exploit the input-output relation to connect the output state of the field to the input one. We analyze the impact of the classical transmission and absorption dyadics on the transitions from ingoing to outgoing s-polariton.
  arXiv  Detail & Related papers  (2024-11-27T17:44:29Z)
• Cavity QED in a High NA Resonator [5.785011027356357]
  A new numerical-aperture, lens-based resonator pushes the single-atom-single-photon absorption probability per round trip close to its fundamental limit. This resonator provides strong light-matter coupling in a cavity where the light circulates only 10 times.
  arXiv  Detail & Related papers  (2024-07-05T18:00:24Z)
• Dielectric Fano Nanoantennas for Enabling Sub-Nanosecond Lifetimes in NV-based Single Photon Emitters [10.310350757094405]
  Dielectric nanoantennas provide strong emission enhancement compared to plasmonic ones. Interfaced emitters have a Purcell enhancement factor of 10, with sub-ns emission lifetime and a polarization contrast of 9.
  arXiv  Detail & Related papers  (2024-07-03T11:15:59Z)
• Excitation spectrum of a multilevel atom coupled with a dielectric nanostructure [0.0]
  We calculate the excitation spectrum of a single-electron atom localized near a dielectric nanostructure. In particular, the strong resonance interaction between atom(s) and light, propagating through a photonic crystal waveguide, justifies as realistic the scenario of a signal light coupling with a small atomic array consisting of a few atoms. As a potential implication, the directional one-dimensional resonance scattering, expected in such systems, could provide a quantum bus by entangling distant atoms integrated into a quantum register.
  arXiv  Detail & Related papers  (2023-12-14T21:17:12Z)
• Enhanced Spectral Density of a Single Germanium Vacancy Center in a Nanodiamond by Cavity-Integration [35.759786254573896]
  Color centers in diamond, among them the negatively-charged germanium vacancy (GeV$-$), are promising candidates for many applications of quantum optics. We demonstrate the transfer of a nanodiamond containing a single ingrown GeV- center with excellent optical properties to an open Fabry-P'erot microcavity.
  arXiv  Detail & Related papers  (2023-07-03T10:33:06Z)
• Levitated Optomechanics with Meta-Atoms [0.0]
  We introduce additional control in levitated optomechanics by trapping a meta-atom supporting Mie resonances. We show that optical levitation and center-of-mass ground-state cooling of silicon nanoparticles in vacuum is not only experimentally feasible but it offers enhanced performance.
  arXiv  Detail & Related papers  (2022-11-15T15:50:51Z)
• Reflective Dielectric Cavity Enhanced Emission from Hexagonal Boron Nitride Spin Defect Arrays [10.645484240543327]
  We demonstrate a robust enhancement structure with advantages including easy on-chip integration, convenient processing, low cost and suitable broad-spectrum enhancement. We achieved a PL enhancement of approximately 7-fold, and the corresponding ODMR contrast achieved 18%. This work has guiding significance for realizing the on-chip integration of spin defects in two-dimensional materials.
  arXiv  Detail & Related papers  (2022-09-01T06:34:31Z)
• Coherent preparation of the biexciton state in a semiconductor quantum dot coupled to a metallic nanoparticle [0.0]
  We study the potential for controlled transfer of population to the biexciton state of a semiconductor quantum dot coupled with a metal nanoparticles. In certain cases, when the distance between the two particles is small, the transfer of population is strongly modified because of the influence of surface plasmons to the excitons.
  arXiv  Detail & Related papers  (2021-12-27T16:36:06Z)
• Cavity Quantum Electrodynamics Design with Single Photon Emitters in Hexagonal Boron Nitride [6.352389759470726]
  We numerically investigate the cavity quantum electrodynamics (cavity-QED) scheme incorporating defect-enabled single photon emitters in h-BN microdisk resonators. The whispering-gallery nature of microdisks can support multiple families of cavity resonances with different radial and azimuthal mode indices simultaneously. This study contributes toward realizing h-BN photonic components, such as low-threshold microcavity lasers and high-purity single photon sources.
  arXiv  Detail & Related papers  (2021-06-05T21:53:44Z)
• High Finesse Cavity with Anapole-Assisted Resonant Subwavelength Particle Mirror [0.0]
  We propose a high finesse cavity with one mirror made of a subwavelength resonant particle as a platform to enhance this interaction. High-quality eigenmode solutions are obtained for such a highly non-paraxial cavity with a very high field concentration at the particle. Light-matter interactions at the subwavelength scale can be greatly enhanced due to the small size of the particle and the high finesse of the cavity.
  arXiv  Detail & Related papers  (2021-04-23T03:18:08Z)
• Quadrupole absorption rate and orbital angular momentum transfer for atoms in optical vortices [0.0]
  We evaluate the absorption rate accompanied by an OAM transfer with reference to a linearly polarized optical vortex. Results indicate that the absorption rate for moderate light intensities is smaller than the quadrupole spontaneous emission rate, but should still be within the measurement capabilities of modern spectroscopic techniques.
  arXiv  Detail & Related papers  (2020-07-08T10:49:37Z)
• Waveguide Quantum Electrodynamics with Giant Superconducting Artificial Atoms [40.456646238780195]
  We employ an alternative architecture that realizes a giant atom by coupling small atoms to a waveguide at multiple, but well separated, discrete locations. Our realization of giant atoms enables tunable atom-waveguide couplings with large on-off ratios and a coupling spectrum that can be engineered by device design.
  arXiv  Detail & Related papers  (2019-12-27T16:45:59Z)

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.