Generation of Narrow-Band Polarization-Entangled Photon Pairs for Atomic Quantum Memories
Open accessAbstract
We report an experimental realization of a narrow band polarization-entangled photon source with a linewidth of 9.6 MHz through cavity-enhanced spontaneous parametric down-conversion. This linewidth is comparable to the typical linewidth of atomic ensemble-based quantum memories. Single-mode output is realized by setting a reasonable cavity length difference between different polarizations, using of temperature controlled etalons and actively stabilizing the cavity. The entangled property is characterized with quantum state tomography, giving a fidelity of 94% between our state and a maximally entangled state. The coherence length is directly measured to be 32 m through two-photon interference.
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Bao et al. (2008) realized a bright narrow-band entangled photon source with a linewidth of 9.6 MHz.
“A recent experiment (Bao et al., 2008) realized such a source with a linewidth of 9.6 MHz.”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Bao et al., 2008
Cites
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Multiphoton entanglement and interferometry
Pan, J.-W., Chen, Z.-B., Lu, C.-Y., Weinfurter, H., Zeilinger, A., & Żukowski, M. (2012) · Reviews of Modern Physics · doi:10.1103/revmodphys.84.777 · Cited by 1,410 · see citing works
Self-citationQuantum memories: emerging applications and recent advances
Heshami, K., England, D. G., Humphreys, P. C., Bustard, P. J., Acosta, V. M., Nunn, J., & Sussman, B. J. (2016) · Journal of Modern Optics · doi:10.1080/09500340.2016.1148212 · Cited by 503 · see citing works
- Authors
- Bao, X.-H., Qian, Y., Yang, J., Zhang, H., Chen, Z.-B., Yang, T., & Pan, J.-W.
- Affiliations
- University of Science and Technology of China (CN)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2008-11-03
- Volume
- 101
- Issue
- 19
- Pages
- 190501-190501
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1975879280
- Cited by
- 193
- References
- 5
- Citations by year
- 2026: 6 · 2025: 5 · 2024: 8 · 2023: 5 · 2022: 7 · 2021: 9 · 2020: 10 · 2019: 14 · 2018: 10 · 2017: 11 · 2016: 20 · 2015: 16 · 2014: 6 · 2013: 10 · 2012: 13
- FWCI
- 22.73
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (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 optics and atomic interactions
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Keywords
- polarization-entangled photon pairs, spontaneous parametric down-conversion, atomic quantum memory, atomic ensembles, etalon, cavity stabilization, quantum state tomography, entanglement fidelity, coherence length, two-photon interference
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