Generation of entanglement using a short-wavelength seeded free-electron laser
(2024) In Science Advances 10(16). p.0668-0668- Abstract
Quantum entanglement between the degrees of freedom encountered in the classical world is challenging to observe due to the surrounding environment. To elucidate this issue, we investigate the entanglement generated over ultrafast timescales in a bipartite quantum system comprising two massive particles: a free-moving photoelectron, which expands to a mesoscopic length scale, and a light-dressed atomic ion, which represents a hybrid state of light and matter. Although the photoelectron spectra are measured classically, the entanglement allows us to reveal information about the dressed-state dynamics of the ion and the femtosecond extreme ultraviolet pulses delivered by a seeded free-electron laser. The observed generation of... (More)
Quantum entanglement between the degrees of freedom encountered in the classical world is challenging to observe due to the surrounding environment. To elucidate this issue, we investigate the entanglement generated over ultrafast timescales in a bipartite quantum system comprising two massive particles: a free-moving photoelectron, which expands to a mesoscopic length scale, and a light-dressed atomic ion, which represents a hybrid state of light and matter. Although the photoelectron spectra are measured classically, the entanglement allows us to reveal information about the dressed-state dynamics of the ion and the femtosecond extreme ultraviolet pulses delivered by a seeded free-electron laser. The observed generation of entanglement is interpreted using the time-dependent von Neumann entropy. Our results unveil the potential for using short-wavelength coherent light pulses from free-electron lasers to generate entangled photoelectron and ion systems for studying spooky action at a distance.
(Less)
- author
- organization
- publishing date
- 2024-04-19
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Science Advances
- volume
- 10
- issue
- 16
- pages
- 0668 - 0668
- publisher
- American Association for the Advancement of Science (AAAS)
- external identifiers
-
- scopus:85190835142
- pmid:38630815
- ISSN
- 2375-2548
- DOI
- 10.1126/sciadv.ado0668
- language
- English
- LU publication?
- yes
- id
- 29eb9974-3e68-4198-833f-fe6850e1b19d
- date added to LUP
- 2024-04-22 08:39:26
- date last changed
- 2024-06-13 07:56:55
@article{29eb9974-3e68-4198-833f-fe6850e1b19d, abstract = {{<p>Quantum entanglement between the degrees of freedom encountered in the classical world is challenging to observe due to the surrounding environment. To elucidate this issue, we investigate the entanglement generated over ultrafast timescales in a bipartite quantum system comprising two massive particles: a free-moving photoelectron, which expands to a mesoscopic length scale, and a light-dressed atomic ion, which represents a hybrid state of light and matter. Although the photoelectron spectra are measured classically, the entanglement allows us to reveal information about the dressed-state dynamics of the ion and the femtosecond extreme ultraviolet pulses delivered by a seeded free-electron laser. The observed generation of entanglement is interpreted using the time-dependent von Neumann entropy. Our results unveil the potential for using short-wavelength coherent light pulses from free-electron lasers to generate entangled photoelectron and ion systems for studying spooky action at a distance.</p>}}, author = {{Nandi, Saikat and Stenquist, Axel and Papoulia, Asimina and Olofsson, Edvin and Badano, Laura and Bertolino, Mattias and Busto, David and Callegari, Carlo and Carlström, Stefanos and Danailov, Miltcho B and Demekhin, Philipp V and Di Fraia, Michele and Eng-Johnsson, Per and Feifel, Raimund and Gallician, Guillaume and Giannessi, Luca and Gisselbrecht, Mathieu and Manfredda, Michele and Meyer, Michael and Miron, Catalin and Peschel, Jasper and Plekan, Oksana and Prince, Kevin C and Squibb, Richard J and Zangrando, Marco and Zapata Abellan, Felipe and Zhong, Shiyang and Dahlström, Jan Marcus}}, issn = {{2375-2548}}, language = {{eng}}, month = {{04}}, number = {{16}}, pages = {{0668--0668}}, publisher = {{American Association for the Advancement of Science (AAAS)}}, series = {{Science Advances}}, title = {{Generation of entanglement using a short-wavelength seeded free-electron laser}}, url = {{http://dx.doi.org/10.1126/sciadv.ado0668}}, doi = {{10.1126/sciadv.ado0668}}, volume = {{10}}, year = {{2024}}, }