Laser Physics

, Volume 16, Issue 4, pp 556–561 | Cite as

How small a packet of photons can be made?

  • P. Saari
Modern Trends in Laser Physics


In contradistinction not only to the seventy-year-old notion of poor localizability of a photon but also to a recent result of principal revisions of the notion, we demonstrate that N-photon pulsed wave functions of a specific type exhibit faster than an exponential falloff of energy and photodetection rate with distance from the pulse center. The wave functions are cylindrical and exhibit an exceptionally strong localization in two dimensions out of three. Our approach involves a “technology transfer” in the sense that, in order to tackle the problem belonging to quantum optics, we make use of results obtained recently in the study of the so-called nondiffracting localized solutions to the classical wave equation.

PACS numbers

03.70.+k 03.50.De 11.30.Cp 


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Copyright information

© MAIK “Nauka/Interperiodica” 2006

Authors and Affiliations

  • P. Saari
    • 1
  1. 1.Institute of PhysicsUniversity of TartuTartuEstonia

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