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Effect of high-dimensional entanglement of Laguerre-Gaussian modes in parametric downconversion

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Title: Effect of high-dimensional entanglement of Laguerre-Gaussian modes in parametric downconversion
Authors: Kawase, Daisuke Browse this author
Miyamoto, Yoko Browse this author
Takeda, Mitsuo Browse this author
Sasaki, Keiji Browse this author →KAKEN DB
Takeuchi, Shigeki Browse this author →KAKEN DB
Issue Date: 1-Apr-2009
Publisher: Optical Society of America
Journal Title: Journal of the Optical Society of America B: Optical Physics
Volume: 26
Issue: 4
Start Page: 797
End Page: 804
Publisher DOI: 10.1364/JOSAB.26.000797
Abstract: We calculate the coincidence count probabilities when the photon pairs entangled in orbital angular momentum generated via spontaneous parametric downconversion are measured by using holograms with an m-fold dislocation, considering the nonzero crystal length. We find that the coincidence probabilities related to azimuthal changes in hologram positions deviate significantly from a sinusoidal curve, which has often been assumed in simple analyses. It is found that the main cause of this effect is the high-dimensional entanglement in Laguerre-Gaussian modes. We also find that the crystal length causes the hologram positions to change for the maximum coincidence probabilities.
Rights: © 2009 Optical Society of America
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 竹内 繁樹

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