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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 28 — Dec. 31, 2012
  • pp: 29761–29768

Observation of non-diffracting behavior at the single-photon level

Héctor Cruz-Ramírez, Roberto Ramírez-Alarcón, Francisco J. Morelos, Pedro A. Quinto-Su, Julio C. Gutiérrez-Vega, and Alfred B. U’Ren  »View Author Affiliations


Optics Express, Vol. 20, Issue 28, pp. 29761-29768 (2012)
http://dx.doi.org/10.1364/OE.20.029761


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Abstract

We demonstrate the generation of non-diffracting heralded single photons, i.e. which are characterized by a single-photon transverse intensity distribution which remains essentially unchanged over a significant propagation distance. For this purpose we have relied on the process of spontaneous parametric downconversion (SPDC) for the generation of signal and idler photon pairs, where our SPDC crystal is pumped by a Bessel-Gauss (BG) beam. Our experiment shows that the well-understood non-diffracting behavior of a BG beam may be directly mapped to the signal-mode, single photons heralded by the detection of a single idler photon. In our experiment, the heralded single photon is thus arranged to be non-diffracting without the need for projecting its single-photon transverse amplitude, post-generation, in any manner.

© 2012 OSA

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(260.1960) Physical optics : Diffraction theory
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

History
Original Manuscript: October 11, 2012
Revised Manuscript: November 29, 2012
Manuscript Accepted: November 30, 2012
Published: December 20, 2012

Citation
Héctor Cruz-Ramírez, Roberto Ramírez-Alarcón, Francisco J. Morelos, Pedro A. Quinto-Su, Julio C. Gutiérrez-Vega, and Alfred B. U’Ren, "Observation of non-diffracting behavior at the single-photon level," Opt. Express 20, 29761-29768 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-28-29761


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