Classical entanglement underpins the invariant propagation of space–time wave packets
Open accessAbstract
Propagation-invariant pulsed beams are generated by introducing appropriate tight correlations in their spatiotemporal spectrum. Such correlations constitute an example of what has been called “classical entanglement,” which is a necessary but insufficient requirement for propagation invariance. We demonstrate theoretically and experimentally that a standard measure of entanglement, the Schmidt number, determines the propagation distance under which the wave packets retain their shape. Reduction in this degree of classical entanglement manifests itself in an increased spread in the measured spatiotemporal spectral correlations.
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- Authors
- Kondakci, H. E., Alonso, M. A., & Abouraddy, A. F.
- Affiliations
- University of Central Florida (US)
- Aix-Marseille Université (FR)
- Venue
- Optics Letters
- Publisher
- Optica Publishing Group
- Published
- 2019-05-17
- Volume
- 44
- Issue
- 11
- Pages
- 2645
- ISSN
- 0146-9592 (ISSN-L)
- 1539-4794
- OpenAlex
- W2944911819
- Cited by
- 52
- References
- 37
- Citations by year
- 2026: 4 · 2025: 3 · 2024: 8 · 2023: 7 · 2022: 8 · 2021: 11 · 2020: 8 · 2019: 3
- FWCI
- 3.30
- Type
- journal article
- Language
- en
- Open access
- green
- hal.science
- Locations
- Optics Letters (publishedVersion)
- HAL AMU (submittedVersion, other-oa)
- Funders
- Office of Naval Research (N00014-17-1-2458)
- National Science Foundation (PHY-1507278)
- Aix-Marseille Université
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Orbital Angular Momentum in Optics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
- Physical Sciences › Physics and Astronomy › Acoustics and Ultrasonics › Random lasers and scattering media
- Keywords
- classical entanglement, propagation-invariant beams, space-time wave packets, Schmidt number, pulsed beams
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