Linear optical controlled-NOT gate in the coincidence basis
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We describe the operation and tolerances of a nondeterministic, coincidence basis, quantum controlled-NOT gate for photonic qubits. It is constructed solely from linear optical elements and requires only a two-photon source for its demonstration. Its success probability is $1/9.$
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The unheralded (post-selected) CNOT gate is a two-photon scheme that requires detection of the two photonic qubits in a computational state to signal success with probability p = 1/9 [35-37].
“The unheralded (or post-selected) CNOT gate shown in Fig. 2(h) is a two-photon scheme that requires the detection of the two photonic qubits in a computational state to signal the success of the gate with probability p = 1 / 9 [35-37].”
From Universal linear optics (2015) · cites this paper as [37]
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References 9 · Cited by 346
- Authors
- Ralph, T. C., Langford, N. K., Bell, T. B., & White, A. G.
- Affiliations
- The University of Queensland (AU)
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2002-06-20
- Volume
- 65
- Issue
- 6
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2592048941
- Cited by
- 346
- References
- 9
- Citations by year
- 2026: 13 · 2025: 16 · 2024: 19 · 2023: 22 · 2022: 6 · 2021: 10 · 2020: 8 · 2019: 21 · 2018: 14 · 2017: 5 · 2016: 23 · 2015: 22 · 2014: 12 · 2013: 16 · 2012: 18
- FWCI
- 13.85
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review A (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- 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 › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum optics and atomic interactions
- Keywords
- CNOT gate, quantum gates, photonic qubits, linear optical circuits, success probability
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