Realization and Characterization of a Two-Photon Four-Qubit Linear Cluster State
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We report on the experimental realization of a four-qubit linear cluster state via two photons entangled both in polarization and linear momentum. This state was investigated by performing tomographic measurements and by evaluating an entanglement witness. By use of this state we carried out a novel nonlocality proof, the so-called "stronger two observer all-versus-nothing" test of quantum nonlocality.
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Demonstration experiments of key components of one-way quantum computation have been achieved using post-selection, demonstrating basic principles including simple algorithms and active feed forward.
“However, demonstration experiments of the key components have been achieved, using post-selection 43-49 .”
From Measurement-based quantum computation (2009) · cites this paper as [47]
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Self-citation
- Authors
- Vallone, G., Pomarico, E., Mataloni, P., De Martini, F., & Berardi, V.
- Affiliations
- National Interuniversity Consortium for the Physical Sciences of Matter (IT)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-05-04
- Volume
- 98
- Issue
- 18
- Pages
- 180502-180502
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2963024295
- Cited by
- 132
- References
- 22
- Citations by year
- 2025: 4 · 2024: 2 · 2023: 4 · 2022: 3 · 2021: 6 · 2020: 3 · 2019: 2 · 2018: 5 · 2017: 4 · 2016: 7 · 2015: 2 · 2014: 7 · 2013: 2 · 2012: 7
- FWCI
- 26.80
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
- Padua Research Archive (University of Padova) (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 Mechanics and Applications
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Keywords
- four-qubit cluster state, linear cluster states, two-photon entanglement, polarization entanglement, entanglement witnesses, quantum nonlocality, quantum state tomography
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