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Theory of two-photon entanglement for spontaneous parametric down-conversion driven by a narrow pump pulse
Abstract
Spontaneous parametric down-conversion (SPDC) has been extensively studied for the case of a continuous wave pump. In this paper SPDC is studied for the case in which the pump is a pulse. The pump pulse acts like a clock with an uncertainty equal to its width. This makes it possible to distinguish pairs of photons born at sufficiently different depths inside the crystal with a consequent decrease in two-photon interference. We study this effect in detail for degenerate collinear type-II SPDC and degenerate type-I SPDC. It may be possible in the type-II case to eliminate the clock effect of the pump by judicious choice of materials and wavelengths.
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“Unfortunately, femtosecond pulse pumped SPDC shows relatively poor quantum interference visibilities (Keller and Rubin, 1997).”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Keller and Rubin, 1997
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Metadata
- Authors
- Keller, T. E., & Rubin, M. H.
- Affiliations
- University of Maryland, Baltimore County (US)
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 1997-08-01
- Volume
- 56
- Issue
- 2
- Pages
- 1534-1541
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W1986808051
- Cited by
- 333
- References
- 12
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 15 · 2023: 10 · 2022: 13 · 2021: 15 · 2020: 8 · 2019: 3 · 2018: 12 · 2017: 9 · 2016: 16 · 2015: 7 · 2014: 15 · 2013: 13 · 2012: 10
- FWCI
- 8.52
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review A (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › 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
- spontaneous parametric down-conversion, two-photon entanglement, two-photon interference, pump pulse width, photon pair generation
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