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Orbital angular momentum modes of high-gain parametric down-conversion

Beltran, Lina, Frascella, Gaetano, Perez, Angela M, Fickler, Robert, Sharapova, Polina R, Manceau, Mathieu, Tikhonova, Olga V, Boyd, Robert W, Leuchs, Gerd, Chekhova, Maria V·2017·Journal of Optics
DOI 10.1088/2040-8986/aa600f
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Abstract

Light beams with orbital angular momentum (OAM) are convenient carriers of quantum information. They can also be used for imparting rotational motion to particles and providing high resolution in imaging. Due to the conservation of OAM in parametric down-conversion (PDC), signal and idler photons generated at low gain have perfectly anti-correlated OAM values. It is interesting to study the OAM properties of high-gain PDC, where the same OAM modes can be populated with large, but correlated, numbers of photons. Here we investigate the OAM spectrum of high-gain PDC and show that the OAM mode content can be controlled by varying the pump power and the configuration of the source. In our experiment, we use a source consisting of two nonlinear crystals separated by an air gap. We discuss the OAM properties of PDC radiation emitted by this source and suggest possible modifications.

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Research works printed but not linked: 32

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Metadata

Authors
Beltran, L., Frascella, G., Perez, A. M., Fickler, R., Sharapova, P. R., Manceau, M., Tikhonova, O. V., Boyd, R. W., Leuchs, G., & Chekhova, M. V.
Venue
Journal of Optics
Publisher
IOP Publishing
Published
2017-03-16
Volume
19
Issue
4
Pages
044005
ISSN
  • 2040-8978
  • 2040-8986
DOI
10.1088/2040-8986/aa600f
Cited by
22
References
1
Licence
Funders
  • Canada Excellence Research Chairs, Government of Canada
  • Natural Sciences and Engineering Research Council of Canada
  • Deutsche Forschungsgemeinschaft (CH1591/2-1)
  • Russian Foundation for Basic Research (16-52-12031 NNIO a)

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