Anomalous symmetry breaking in classical two-dimensional diffusion of coherent atoms

Rami Pugatch, Dipankar Bhattacharyya, Ariel Amir, Yoav Sagi, Nir Davidson

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The electromagnetically induced transparency (EIT) spectrum of atoms diffusing in and out of a narrow beam is measured and shown to manifest the two-dimensional δ-function anomaly in a classical setting. In the limit of small-area beams, the EIT line shape is independent of power, and equal to the renormalized local density of states of a free particle Hamiltonian. The measured spectra for different powers and beam sizes collapses to a single universal curve with a characteristic logarithmic Van Hove singularity close to resonance.

Original languageEnglish
Article number033807
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
StatePublished - 6 Mar 2014
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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