Phys. Rev. A 79, 053849 (2009) [5 pages]Possibility of coherent phenomena such as Bloch oscillations with single photons via W statesReceived 7 January 2009; published 27 May 2009 We examine the behavior of single photons at multiport devices and inquire if coherent effects are possible. In particular we study how single photons need to be manipulated in order to study coherent phenomena. We show that single photons need to be produced in W states which lead to vanishing mean amplitude but nonzero correlations between the inputs at different ports. Such correlations restore coherent effects with single photons. As a specific example we demonstrate Bloch oscillations with single photons and thus provide strict analog of Bloch oscillation of electrons. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.79.053849
DOI:
10.1103/PhysRevA.79.053849
PACS:
42.50.Ar, 03.67.−a, 42.79.Gn, 42.50.Dv
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