Quantum and classical correlations in waveguide lattices

Yaron Bromberg*, Yoav Lahini, Roberto Morandotti, Yaron Silberberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

273 Scopus citations


We study quantum and classical Hanbury Brown-Twiss correlations in waveguide lattices. We develop a theory for the propagation of photon pairs in the lattice, predicting the emergence of nontrivial quantum interferences unique to lattice systems. Experimentally, we observe the classical counterpart of these interferences using intensity-correlation measurements. We discuss the correspondence between the classical and quantum correlations, and consider path-entangled input states which do not have a classical analogue. Our results demonstrate that waveguide lattices can be used as a robust and highly controllable tool for manipulating quantum states, and offer new ways of studying the quantum properties of light.

Original languageAmerican English
Article number253904
JournalPhysical Review Letters
Issue number25
StatePublished - 26 Jun 2009
Externally publishedYes


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