Experimental Observation of Four-Photon Entangled Dicke State with High Fidelity
Open accessAbstract
We present the experimental observation of the symmetric four-photon entangled Dicke state with two excitations |D_{4};{(2)}. A simple experimental setup allowed quantum state tomography yielding a fidelity as high as 0.844+/-0.008. We study the entanglement persistency of the state using novel witness operators and focus on the demonstration of a remarkable property: depending on the orientation of a measurement on one photon, the remaining three photons are projected into both inequivalent classes of genuine tripartite entanglement, the Greenberger-Horne-Zeilinger and W class. Furthermore, we discuss possible applications of |D_{4};{(2)} in quantum communication.
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The symmetric Dicke state can be obtained by using collinear type-II SPDC and splitting the four (six) photons into four (six) output modes.
“Another important multipartite entangled state, the symmetric Dicke state, can be obtained by using collinear type-II SPDC and splitting the four (six) photons into four (six) output modes (Kiesel et al. 2007;Wieczorek et al. 2009a;Prevedel et al. 2009).”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Kiesel et al. 2007
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Self-citationExperimental Observation of Four-Photon Entanglement from Parametric Down-Conversion
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Self-citationMultiphoton entanglement and interferometry
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Deterministic Preparation of Dicke States
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Experimental Observation of an Entire Family of Four-Photon Entangled States
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Self-citationPrecision bounds for gradient magnetometry with atomic ensembles
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Self-citation
- Authors
- Kiesel, N., Schmid, C., Tóth, G., Solano, E., & Weinfurter, H.
- Affiliations
- Max Planck Institute of Quantum Optics (DE)
- Institute for Solid State Physics and Optics (HU)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-02-07
- Volume
- 98
- Issue
- 6
- Pages
- 063604-063604
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2058226548
- Cited by
- 262
- References
- 3
- Citations by year
- 2026: 7 · 2025: 15 · 2024: 14 · 2023: 27 · 2022: 4 · 2021: 8 · 2020: 5 · 2019: 10 · 2018: 6 · 2017: 9 · 2016: 16 · 2015: 16 · 2014: 15 · 2013: 8 · 2012: 15
- FWCI
- 29.20
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- Max Planck Institute for Plasma Physics (submittedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum optics and atomic interactions
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Keywords
- quantum state tomography, entanglement fidelity, genuine tripartite entanglement, GHZ states, W state, quantum communication
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