Squeezed states of light after high-order harmonic generation in excited atomic systems
High-harmonic generation (HHG) has recently emerged as a promising method for generating nonclassical 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 were 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 Schr"odinger kitten states through heralding measurements, specifically via photon subtraction in one of the modes influenced by two-mode squeezing.
Authors
- Michael Krüger (ORCID: https://orcid.org/0000-0002-6188-9179)
- Theocharis Lamprou (ORCID: https://orcid.org/0000-0001-5307-3041)
- P. Tzallas (ORCID: https://orcid.org/0000-0002-8063-5596)
- Maciej Lewenstein (ORCID: https://orcid.org/0000-0002-0210-7800)
- H. B. Crispin (ORCID: https://orcid.org/0000-0003-3322-7925)
- Javier Rivera-Dean (ORCID: https://orcid.org/0000-0003-3031-0029)
- Emilio Pisanty (ORCID: https://orcid.org/0000-0003-0598-8524)
- Marcelo F. Ciappina (ORCID: https://orcid.org/0000-0002-1123-6460)
- Philipp Stammer (ORCID: https://orcid.org/0000-0001-7137-2053)
Institutions
- Institució Catalana de Recerca i Estudis Avançats (ES)
- TU Wien (AT)
- Technion – Israel Institute of Technology (IL)
- Institute of Photonic Sciences (ES)
- King's College London (GB)
- ELI-HU Research and Development Non-Profit (HU)
- Extreme Light Infrastructure - Nuclear Physics (RO)
- Foundation for Research and Technology Hellas (GR)
Publication Details
- Journal
- Physical review. A/Physical review, A
- Published
- 2024-12-23
- DOI
- https://doi.org/10.1103/physreva.110.063118
- Citations
- 10
- Primary Topic
- Laser-Matter Interactions and Applications
- Type
- article
- Field-Weighted Citation Impact
- 3.38
Funders
- “la Caixa” Foundation
- Institut de Ciències Fotòniques
- European Commission
- Generalitat de Catalunya
- Federación Española de Enfermedades Raras
- General Secretariat for Research and Technology
- Natural Science Foundation of Guangdong Province
- Hellenic Foundation for Research and Innovation
- Horizon 2020 Framework Programme
- European Research Council
- Agència de Gestió d'Ajuts Universitaris i de Recerca
- Horizon 2020
- Agencia Estatal de Investigación
- National Key Research and Development Program of China
- Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province
- HORIZON EUROPE Marie Sklodowska-Curie Actions