Optical Nondestructive Controlled-NOT Gate without Using Entangled Photons
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We present and experimentally demonstrate a novel optical nondestructive controlled-NOT gate without using entangled ancilla. With much fewer measurements compared with quantum process tomography, we get a good estimation of the gate fidelity. The result shows a great improvement compared with previous experiments. Moreover, we also show that quantum parallelism is achieved in our gate and the performance of the gate cannot be reproduced by local operations and classical communications.
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Such gates, assisted by entangled or unentangled photon pairs, were reported using four or five photons, see Gasparoni et al., (2004), Zhao et al., (2005b), Bao et al., (2007), Tokunaga et al., (2008) and Gao et al., (2010b).
“Such gates, assisted by entangled or unentangled photon pairs, were reported using four or five photons, see Gasparoni et al., (2004), Zhao et al., (2005b), Bao et al., (2007), Tokunaga et al., (2008) and Gao et al., (2010b).”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Bao et al., 2007
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Multiphoton entanglement and interferometry
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“The experimental setup on entanglement purification (Pan et 57 Recently, Bao et al. (2007) experimentally demonstrated a novel optical nondestructive CNOT gate without using entangled ancilla, but four single photons instead. al., 2003b; section VII.”
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- Authors
- Bao, X.-H., Chen, T.-Y., Zhang, Q., Yang, J., Zhang, H., Yang, T., & Pan, J.-W.
- Affiliations
- University of Science and Technology of China (CN)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-04-24
- Volume
- 98
- Issue
- 17
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2062662361
- Cited by
- 79
- References
- 7
- Citations by year
- 2026: 5 · 2025: 4 · 2024: 4 · 2023: 2 · 2022: 2 · 2021: 6 · 2020: 1 · 2019: 1 · 2018: 4 · 2017: 1 · 2016: 3 · 2015: 4 · 2014: 5 · 2013: 8 · 2012: 6
- FWCI
- 6.71
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- arXiv (Cornell University) (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
- CNOT gate, non-destructive measurement, quantum parallelism, local operations and classical communication, quantum computing
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