Superradiance of molecular nitrogen ions in strong laser fields

• URL: http://arxiv.org/abs/2105.00675v1
• Date: Mon, 3 May 2021 08:08:04 GMT
• Title: Superradiance of molecular nitrogen ions in strong laser fields
• Authors: Q. Wang (1 and 2), P. Ding (2), S. G. Wilkins (3), M. Athanasakis-Kaklamanakis (1 and 4), Y. Zhang (2), Z. Liu (2), B. Hu (2). ((1) CERN, (2) Lanzhou University, (3) Massachusetts Institute of Technology, (4) KU Leuven)
• Abstract summary: We perform a combined theoretical and experimental investigation of the superradiance in the quantum coherent system generated by strong laser fields. The semiclassical theory of superradiance that includes the superradiant temporal profile, character duration, time delay, intensity is derived. Our results not only demonstrate that the time-delayed optical amplification inside the molecular nitrogen ions is superradiance, but also reveal the quantum optical properties of strong-field physics.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We perform a combined theoretical and experimental investigation of the superradiance in the quantum coherent system generated by strong laser fields. The semiclassical theory of superradiance that includes the superradiant temporal profile, character duration, time delay, intensity is derived. The experimental data and theoretical predictions of 391-nm forward emission as a function of nitrogen gas pressure are compared and show good agreement. Our results not only demonstrate that the time-delayed optical amplification inside the molecular nitrogen ions is superradiance, but also reveal the quantum optical properties of strong-field physics.

Related papers

• Cavity-Quantum Electrodynamics with Moiré Flatband Photonic Crystals [35.119260614523256]
  A quantum dot can be tuned by a factor of 40, ranging from 42 ps to 1692 ps, which is attributed to strong Purcell enhancement and Purcell inhibition effects. Our findings pave the way for moir'e flatband cavity-enhanced quantum light sources, quantum optical switches, and quantum nodes for quantum internet applications.
  arXiv  Detail & Related papers  (2024-11-25T18:52:11Z)
• Photon bunching in high-harmonic emission controlled by quantum light [0.0]
  Recent theories have laid the groundwork for understanding how quantum-optical properties affect high-field photonics. We demonstrate a new experimental approach that transduces some properties of a quantum-optical state through a strong-field nonlinearity. Our results suggest that perturbing strong-field dynamics with quantum-optical states is a viable way to coherently control the generation of these states at short wavelengths.
  arXiv  Detail & Related papers  (2024-04-08T12:53:42Z)
• Theoretical Study on Superradiant Raman Scattering with Rubidium Atoms in An Optical Cavity [7.998176799953779]
  Superradiant Raman scattering of Rubidium atoms has been explored in the experiment [Nature 484, 78 (2012). We develop a quantum master equation theory by treating the Rubidium atoms as three-level systems, and coupling them with a dressed laser and an optical cavity. Our studies provide a unified view on the superradiant Raman scattering pulses, and an alternative explanation to the broad spectrum of the steady-state Raman scattering.
  arXiv  Detail & Related papers  (2024-01-01T15:15:06Z)
• Threshold studies for a hot beam superradiant laser including an atomic guiding potential [0.0]
  Recent theoretical predictions hint at an implementation of a superradiant laser based on narrow optical clock transitions. We show that the temperature threshold can be significantly increased by using more atoms. Interestingly we see that higher order atom-field and direct atom-atom quantum correlations play only a minor role in the laser dynamics.
  arXiv  Detail & Related papers  (2023-08-10T14:05:09Z)
• Dynamics of molecular rotors in bulk superfluid helium [68.8204255655161]
  We report on the experimental study of the laser-induced rotation of helium dimers inside the superfluid $4mathrmHe$ bath at variable temperature. The observed temperature dependence suggests a non-equilibrium evolution of the quantum bath, accompanied by the emission of the wave of second sound.
  arXiv  Detail & Related papers  (2023-04-08T01:22:19Z)
• Exact Quantum Virial Expansion for the Optical Response of Doped Two-Dimensional Semiconductors [0.0]
  We present a quantum virial expansion for the optical response of a doped two-dimensional semiconductor. As we show, this constitutes a perturbatively exact theory in the high-temperature or low-doping regime.
  arXiv  Detail & Related papers  (2022-12-11T23:30:29Z)
• Ultrafast non-equilibrium dynamics of rotons in superfluid helium [0.0]
  We describe a method for locally perturbing the density of superfluid helium through the excitation of roton pairs with ultrashort laser pulses. Our results reveal an ultrafast cooling of hot roton pairs as they thermalize with the colder gas of other quasiparticles.
  arXiv  Detail & Related papers  (2022-10-09T18:55:11Z)
• Phonon dephasing and spectral diffusion of quantum emitters in hexagonal Boron Nitride [52.915502553459724]
  Quantum emitters in hexagonal boron nitride (hBN) are emerging as bright and robust sources of single photons for applications in quantum optics. We study phonon dephasing and spectral diffusion of quantum emitters in hBN via resonant excitation spectroscopy at cryogenic temperatures.
  arXiv  Detail & Related papers  (2021-05-25T05:56:18Z)
• Maximum refractive index of an atomic medium [58.720142291102135]
  All optical materials with a positive refractive index have a value of index that is of order unity. Despite the giant response of an isolated atom, we find that the maximum index does not indefinitely grow with increasing density. We propose an explanation based upon strong-disorder renormalization group theory.
  arXiv  Detail & Related papers  (2020-06-02T14:57:36Z)
• Nitrogen-vacancy defect emission spectra in the vicinity of an adjustable silver mirror [62.997667081978825]
  Optical emitters of quantum radiation in the solid state are important building blocks for emerging technologies. We experimentally study the emission spectrum of an ensemble of nitrogen-vacancy defects implanted around 8nm below the planar diamond surface.
  arXiv  Detail & Related papers  (2020-03-31T10:43:26Z)
• Impact of ionizing radiation on superconducting qubit coherence [43.13648171914508]
  We show that environmental radioactive materials and cosmic rays contribute to an elevated quasiparticle density that would limit superconducting qubits of the type measured here to coherence times in the millisecond regime. Introducing radiation shielding reduces the flux of ionizing radiation and positively correlates with increased coherence time.
  arXiv  Detail & Related papers  (2020-01-24T20:59:46Z)

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.