Eliminating frequency and space-time correlations in multiphoton states
Abstract
Multiphoton states constructed from photon pairs generated in the process of spontaneous parametric down-conversion possess frequency and space-time correlations that may carry undesired distinguishing information. It is shown that these correlations may be eliminated if certain conditions in the source configuration are satisfied. For the cases in which these conditions cannot be satisfied because of experimental constraints, it is shown that the correlations may be reduced through proper choices of crystal length and pump bandwidth. The advantage of such source engineering is that it yields much higher count rates, since no photon pairs are lost by predetection spectral filtering.
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Engineering phase-matching conditions in photonic crystal fibers allowed creation of photon pairs at 597 nm and 860 nm in an intrinsically factorable state of frequencies.
“Engineering of the phase matching conditions in the fibers allowed creation of photon pairs at 597 nm and 860 nm in an intrinsically factorable state of frequencies.”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Grice, U'Ren, and Walmsley (2001 2009)
Cites
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- Authors
- Grice, W. P., U’Ren, A. B., & Walmsley, I. A.
- Affiliations
- Oak Ridge National Laboratory (US)
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2001-11-19
- Volume
- 64
- Issue
- 6
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2014669903
- Cited by
- 461
- References
- 2
- Citations by year
- 2026: 14 · 2025: 19 · 2024: 15 · 2023: 21 · 2022: 15 · 2021: 17 · 2020: 19 · 2019: 29 · 2018: 28 · 2017: 39 · 2016: 26 · 2015: 23 · 2014: 16 · 2013: 24 · 2012: 16
- FWCI
- 4.47
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review A (publishedVersion)
- Funders
- National Science Foundation
- U.S. Department of Energy
- Deutscher Akademischer Austauschdienst
- Multidisciplinary University Research Initiative
- Basic Energy Sciences
- Army Research Office
- 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 › Photorefractive and Nonlinear Optics
- Keywords
- multi-photon states, spontaneous parametric down-conversion, frequency correlation, spatio-temporal correlation, crystal length, pump bandwidth, spectral filtering, photon pair generation, count rate
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