Quantum phase gate for photonic qubits using only beam splitters and postselection
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We show that a beam splitter of reflectivity one-third can be used to realize a quantum phase gate operation if only the outputs conserving the number of photons on each side are postselected.
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Hofmann and Takeuchi, (2002) and independently Ralph et al., (2002a, 2002b) developed quantum gates under the restriction of a two, or four-mode case, that is the successful operation of the gate can be verified if the two photons involved are detected in certain outputs.
“Hofmann and Takeuchi, (2002) and independently Ralph et al., (2002aRalph et al., ( , 2002b) ) developed quantum gates under the restriction of what is here called a two, or four-mode case, that is the successful operation of the gate can be verified if the two photons involved are detected in certain outputs”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Hofmann and Takeuchi, 2002
The cz gate is relatively forgiving of the exact splitting ratios, making it suitable for a PPBS architecture.
“As originally anticipated in Ref. [13], the cz gate is relatively forgiving of the exact splitting ratios-making it an eminently suitable gate to be realised with a PPBS architecture.”
From Demonstration of a Simple Entangling Optical Gate and Its Use in Bell-State Analysis (2005) · cites this paper as [13]
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- Authors
- Hofmann, H. F., & Takeuchi, S.
- Affiliations
- Japan Science and Technology Agency (JP)
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2002-08-08
- Volume
- 66
- Issue
- 2
- Pages
- 024308-024308-3
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2068866302
- Cited by
- 192
- References
- 4
- Citations by year
- 2026: 3 · 2025: 8 · 2024: 9 · 2023: 11 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 8 · 2018: 8 · 2017: 1 · 2016: 7 · 2015: 9 · 2014: 9 · 2013: 8 · 2012: 9
- FWCI
- 8.66
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Physical Review A (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Institutional Repositories DataBase (IRDB) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University) (submittedVersion)
- Hiroshima University Institutional Repository (submittedVersion, other-oa)
- Hiroshima University Acedemic Information Repository (Hiroshima University) (submittedVersion)
- Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by-nc-nd)
- 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
- quantum phase gate, photonic qubits, beam splitter, post-selection, photon number conservation, quantum gates
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