Squeezed states of light after high-harmonic generation in excited atomic systems
arXiv:2408.07577 · doi:10.1103/PhysRevA.110.063118
Abstract
High-harmonic generation (HHG) has recently emerged as a promising method for generating non-classical states of light with frequencies spanning from the infrared up to the extreme ultraviolet regime. In this work, we theoretically investigate the generation of squeezed states of light through HHG processes in atomic systems that had been initially driven to their first excited state. Our study reveals significant single-mode squeezing in both the driving field and low-order harmonic modes. Additionally, we characterize two-mode squeezing features in the generated states, both between fundamental and harmonic modes, and among the harmonic modes themselves. Using these correlations, we demonstrate the generation of optical Schrödinger kitten states through heralding measurements, specifically via photon subtraction in one of the modes influenced by two-mode squeezing.
17 pages (10 main text + 7 appendix), 6 figures (4 main text + 2 appendix). Comments are welcome. In v2 we have modified the text accordingly to the comments received by the anonymous reviewers of Physical Review A. We have also updated the references that have been already published
References in corpus (18)
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- Generation of a superposition of odd photon number states for quantum information networks
- Spatio-temporal isolation of attosecond soft X-ray pulses in the water window
- Gaussian measures of entanglement versus negativities: the ordering of two-mode Gaussian states
- High harmonic generation driven by quantum light
- Quantum electrodynamics of intense laser-matter interactions: A tool for quantum state engineering
- Photon-statistics force in ultrafast electron dynamics
- High Harmonic Generation by Bright Squeezed Vacuum
- Light emission from strongly driven many-body systems
- Strong laser physics, non-classical light states and quantum information science
- Entanglement and squeezing of the optical field modes in high harmonic generation
- Strong laser fields and their power to generate controllable high-photon-number coherent-state superpositions
- Quantum phenomena in attosecond science
- Electron-correlation induced nonclassicallity of light from high-harmonic generation
- Light-matter entanglement after above-threshold ionization processes in atoms
- Theory of entanglement and measurement in high harmonic generation
- High-order harmonic generation in atomic and molecular systems
- Evidence of the quantum-optical nature of high-harmonic generation
Cited by in corpus (4)
- Structured squeezed light allows for high-harmonic generation in classical forbidden geometries
- Ultrafast quantum light uncertainty dynamics in real time
- Hierarchy of approximations for describing quantum light from high-harmonic generation: A Fermi-Hubbard model study
- High-Order Harmonic Generation with Beyond-Semiclassical Emitter Dynamics: A Strong-Field Quantum Optical Heisenberg Picture Approach