Quantum Entanglement of a Large Number of Photons
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A bipartite multiphoton entangled state is created through stimulated parametric down-conversion of strong laser pulses in a nonlinear crystal. It is shown how detectors that do not resolve the photon number can be used to analyze such multiphoton states. Entanglement of up to 12 photons is detected using both the positivity of the partially-transposed density matrix and a newly derived criteria. Furthermore, evidence is provided for entanglement of up to 100 photons. The multiparticle quantum state is such that even in the case of an overall photon collection and detection efficiency as low as a few percent, entanglement remains and can be detected.
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Later, twin-beam entanglement of up to 12 photons was experimentally observed.
“Later, twin-beam entanglement of up to 12 photons (Eisenberg et al., 2004) was experimentally observed.”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Eisenberg et al., 2004
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- Authors
- Eisenberg, H. S., Khoury, G., Durkin, G. A., Simon, C., & Bouwmeester, D.
- Affiliations
- University of California, Santa Barbara (US)
- Centre National de la Recherche Scientifique (FR)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2004-11-04
- Volume
- 93
- Issue
- 19
- Pages
- 193901-193901
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2003390277
- Cited by
- 137
- References
- 25
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 5 · 2023: 6 · 2022: 2 · 2021: 2 · 2020: 1 · 2019: 2 · 2018: 4 · 2017: 5 · 2016: 8 · 2015: 4 · 2014: 3 · 2013: 8 · 2012: 10
- FWCI
- 11.16
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- arXiv (Cornell University) (publishedVersion)
- PubMed (publishedVersion)
- CERN Document Server (European Organization for Nuclear Research) (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
- multi-photon entanglement, bipartite entangled states, stimulated parametric down-conversion, nonlinear optical crystals, entanglement criteria, photon number resolution
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