Simple scheme for efficient linear optics quantum gates
Open accessAbstract
We describe the construction of a conditional quantum control-NOT (CNOT) gate from linear optical elements following the program of Knill, Laflamme, and Milburn [Nature 409, 46 (2001)]. We show that the basic operation of this gate can be tested using current technology. We then simplify the scheme significantly.
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Several examples of photonic chips specifically fabricated to implement unheralded two-qubit gates have been reported.
“While these are the first heralded two-qubit processes in integrated optics, several examples of photonic chips specifically fabricated to implement unheralded (and hence not scalable) two-qubit gates have been reported [21, 33, 34].”
From Universal linear optics (2015) · cites this paper as [33]
These are the first heralded two-qubit processes in integrated optics.
“While these are the first heralded two-qubit processes in integrated optics, several examples of photonic chips specifically fabricated to implement unheralded (and hence not scalable) two-qubit gates have been reported [21, 33, 34].”
From Universal linear optics (2015) · cites this paper as [33]
The unheralded two-photon CNOT gate fidelities were greater than those previously reported.
“The process fidelity was found to be F p = 0 . 909 ± 0 . 001, and the average gate fidelity F g = 0 . 927 ± 0 . 001 (see Appendix for details), greater than those previously reported [21, 33, 39].”
From Universal linear optics (2015) · cites this paper as [33]
The gate as a Bell-state analyser has the advantage of higher success probability and no ancillae compared to alternative recent demonstrations.
“Finally, we have demonstrated the operation of this gate as a Bell-state analyser which has the advantage of higher success probability and no ancillae compared to alternative recent demonstrations [9,27].”
From Demonstration of a Simple Entangling Optical Gate and Its Use in Bell-State Analysis (2005) · cites this paper as [9]
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- Authors
- Ralph, T. C., White, A. G., Munro, W. J., & Milburn, G. J.
- Affiliations
- The University of Queensland (AU)
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2001-12-12
- Volume
- 65
- Issue
- 1
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2146134810
- Cited by
- 205
- References
- 12
- Citations by year
- 2026: 1 · 2025: 8 · 2024: 6 · 2023: 7 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 3 · 2018: 5 · 2017: 3 · 2016: 5 · 2015: 5 · 2014: 2 · 2013: 8 · 2012: 6
- FWCI
- 16.76
- 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 Mechanics and Applications
- Keywords
- linear optical quantum computing, quantum gate implementation
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