Collective nuclear excitation dynamics in mono-modal x-ray waveguides

• URL: http://arxiv.org/abs/2403.06508v1
• Date: Mon, 11 Mar 2024 08:35:04 GMT
• Title: Collective nuclear excitation dynamics in mono-modal x-ray waveguides
• Authors: Leon M. Lohse, Petar Andreji\'c, Sven Velten, Malte Vassholz, Charlotte Neuhaus, Ankita Negi, Anjali Panchwanee, Ilya Sergeev, Adriana P\'alffy, Tim Salditt, Ralf R\"ohlsberger
• Abstract summary: M"ossbauer nuclei placed in planar x-ray waveguides show distinct temporal emission characteristics. Our findings pave the way for applications ranging from fundamental studies of cooperative emission at hard x-ray frequencies up to new methods of narrowband x-ray control via the engineering of collective radiation patterns.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Ensembles of identical atoms exhibit peculiar collective properties in their interaction with radiation depending on geometry and environment where they are embedded in. A remarkably clean and versatile platform to study collective effects in resonant light scattering are M\"ossbauer nuclei placed in planar x-ray waveguides. Here we conceive and demonstrate experimentally distinct temporal emission characteristics in these systems, ranging from a tunable accelerated exponential decay all the way to a pronounced oscillatory emission pattern, depending on the waveguide geometry and mode of excitation. The observed temporal and spatial emission characteristics of the collectively excited nuclear state in the waveguide -- the nuclear exciton -- are well reproduced by a unified theoretical model. Our findings pave the way for applications ranging from fundamental studies of cooperative emission at hard x-ray frequencies up to new methods of narrowband x-ray control via the engineering of collective radiation patterns.

Related papers

• Correlated relaxation and emerging entanglement in arrays of $Λ$-type atoms [83.88591755871734]
  We show that the atomic entanglement emerges in the course of relaxation and persists in the final steady state of the system. Our findings open a new way to engineer dissipation-induced entanglement.
  arXiv  Detail & Related papers  (2024-11-11T08:39:32Z)
• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Super- and subradiant dynamics of quantum emitters mediated by atomic matter waves [0.0]
  We explore cooperative dynamics of quantum emitters in an optical lattice that interact by radiating atomic matter waves. We demonstrate directional super- and subradiance from a superfluid phase with tunable radiative phase lags. We observe a coupling to collective bound states with radiation trapped at and between the emitters.
  arXiv  Detail & Related papers  (2023-11-16T00:37:06Z)
• A characterization and detection method for x-ray excitation of M\"ossbauer nuclei beyond the low-excitation regime [0.0]
  X-ray free-electron lasers promise a substantial enhancement of the number of nuclear-resonant photons per pulse. We show that the ratio of the two observables is constant within the LER. We develop a variety of experimental signatures both, for near-instantaneous impulsive and for temporally-extended non-impulsive x-ray excitation.
  arXiv  Detail & Related papers  (2023-08-15T08:47:30Z)
• Waveguide QED with Moessbauer Nuclei [0.0]
  Thin-film nanostructures with embedded M"ossbauer nuclei have been successfully used for x-ray quantum optical applications. Here we address theoretically a new geometry, in which hard x-rays are coupled in forward incidence. We show that it combines aspects of both nuclear forward scattering, visible as dynamical beating in the grazing-temporal response, and the resonance structure from grazing incidence, visible in the spectrum of guided modes.
  arXiv  Detail & Related papers  (2023-05-19T12:53:00Z)
• Resonant Parametric Photon Generation in Waveguide-coupled Quantum Emitter Arrays [83.88591755871734]
  We have developed a theory of parametric photon generation in the waveguides coupled to arrays of quantum emitters with temporally modulated resonance frequencies. Such generation can be interpreted as a dynamical Casimir effect. We demonstrate numerically and analytically how the emission directionality and photon-photon correlations can be controlled by the phases of the modulation.
  arXiv  Detail & Related papers  (2023-02-24T18:07:49Z)
• Emergent Quasiperiodicity from Polariton-phonon Hybrid Excitations in Waveguide Quantum Optomechanics [2.798030314600194]
  We investigate polariton-phonon hybrid excitations, which describe the collective excitations of emitter-photon polaritons and vibrational phonons. We demonstrate the emergence of an interaction-induced quasiperiodic structure caused by the interplay between phonon scatterings and waveguide-mediated long-range couplings.
  arXiv  Detail & Related papers  (2022-07-18T12:15:08Z)
• Directional transport along an atomic chain [0.0]
  We explore the possibility to create directional transport in an open, collective quantum system. We find that directional waveguides allow for an efficient outcoupling of light by reducing backscattering channels at the edges. A directional waveguide is shown to be more robust to localization, but at the cost of increased radiative losses.
  arXiv  Detail & Related papers  (2021-11-12T14:26:14Z)
• Multiband and array effects in matter-wave-based waveguide QED [0.0]
  Recent experiments on spontaneous emission of atomic matter waves open a new window into the behavior of quantum emitters coupled to a waveguide. We develop an approach based on infinite products to study this system theoretically.
  arXiv  Detail & Related papers  (2021-08-24T20:12:29Z)
• Localized vibrational modes in waveguide quantum optomechanics with spontaneously broken PT symmetry [117.44028458220427]
  We study theoretically two vibrating quantum emitters trapped near a one-dimensional waveguide and interacting with propagating photons. In the regime of strong optomechanical interaction the light-induced coupling of emitter vibrations can lead to formation of spatially localized vibration modes, exhibiting parity-time symmetry breaking.
  arXiv  Detail & Related papers  (2021-06-29T12:45:44Z)
• A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
  We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
  arXiv  Detail & Related papers  (2021-06-21T17:34:02Z)
• Tunable Anderson Localization of Dark States [146.2730735143614]
  We experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system. We observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes. The experiment opens the door to the study of various localization phenomena on a new platform.
  arXiv  Detail & Related papers  (2021-05-25T07:52:52Z)
• Transient nuclear inversion by X-Ray Free Electron Laser in a tapered x-ray waveguid [0.36001039618949515]
  We show how tapered x-ray waveguides can focus and guide radiation from x-ray lasers. This feature can be used to significantly enhance spatial interactions of x-rays. Our results anticipate the important role of tapered x-ray waveguides in the emerging field of x-ray quantum optics with nuclear transitions.
  arXiv  Detail & Related papers  (2021-04-16T02:06:52Z)
• Waveguide quantum electrodynamics: collective radiance and photon-photon correlations [151.77380156599398]
  Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters. We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
  arXiv  Detail & Related papers  (2021-03-11T17:49:52Z)
• Single collective excitation of an atomic array trapped along a waveguide: a study of cooperative emission for different atomic chain configurations [0.0]
  Ordered atomic arrays trapped in the vicinity of nanoscale waveguides offer original light-matter interfaces. We study the decay dynamics of a single collective atomic excitation coupled to a waveguide in different configurations.
  arXiv  Detail & Related papers  (2021-01-14T00:01:06Z)
• Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
  We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control. We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap. The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
  arXiv  Detail & Related papers  (2020-06-05T09:27:53Z)
• Interaction signatures and non-Gaussian photon states from a strongly driven atomic ensemble coupled to a nanophotonic waveguide [0.0]
  We study theoretically a laser-driven one-dimensional chain of atoms interfaced with the guided optical modes of a nanophotonic waveguide. We find that the fluorescence excitation line shape changes as the number of atoms is increased, eventually undergoing a splitting that provides evidence for the waveguide-mediated all-to-all interactions.
  arXiv  Detail & Related papers  (2020-03-03T16:13:34Z)

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.