Title

Classical Analogue Of Displaced Fock States And Quantum Correlations In Glauber-Fock Photonic Lattices

Abstract

Coherent states and their generalizations, displaced Fock states, are of fundamental importance to quantum optics. Here we present a direct observation of a classical analogue for the emergence of these states from the eigenstates of the harmonic oscillator. To this end, the light propagation in a Glauber-Fock waveguide lattice serves as equivalent for the displacement of Fock states in phase space. Theoretical calculations and analogue classical experiments show that the square-root distribution of the coupling parameter in such lattices supports a new family of intriguing quantum correlations not encountered in uniform arrays. Because of the broken shift invariance of the lattice, these correlations strongly depend on the transverse position. Consequently, quantum random walks with this extra degree of freedom may be realized in Glauber-Fock lattices. © 2011 American Physical Society.

Publication Date

8-31-2011

Publication Title

Physical Review Letters

Volume

107

Issue

10

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevLett.107.103601

Socpus ID

80052284375 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80052284375

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