Phase-Sensitive Detection for Unconventional Bose-Einstein Condensations

Details Phase-Sensitive Detection for Unconventional Bose-Einstein Condensations Phase-Sensitive Detection for Unconventional Bose-Einstein Condensations

2011-10-13

arxiv.org/abs/1110.3021v1

Physics

Condensed Matter

Quantum Gases

4.5 pages, 6 figures

Scientific paper

We propose a phase-sensitive detection scheme to identify the unconventional $p_{x}\pm ip_{y}$ symmetry of the condensate wavefunctions of bosons, which have already been proposed and realized in high bands in optical lattices. Using the impulsive Raman operation combining with time-of-flight imaging, the off-diagonal correlation functions in momentum space give rise to the relative phase information between different components of condensate wavefunctions. This scheme is robust against the interaction and interband effects, and provides smoking gun evidence for unconventional Bose-Einstein condensations with nontrivial condensation symmetries.

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