Phase-Sensitive Detection for Unconventional Bose-Einstein Condensations

Abstract

We propose a phase-sensitive detection scheme to identify the unconventional $p_x\pm i{p}_y$ 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.

4.5 pages, 6 figures

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Cited by in corpus (9)

• Physics of higher orbital bands in optical lattices: a review
• Interaction-induced chiral p_x \pm i p_y superfluid order of bosons in an optical lattice
• Observing Chiral Superfluid Order by Matter-Wave Interference
• Interaction Quench Induced Multimode Dynamics of Finite Atomic Ensembles
• Orbital optical lattices with bosons
• Exotic phases of interacting p-band bosons
• Formation and detection of a chiral orbital Bose liquid in an optical lattice
• Unconventional Bose-Einstein Condensation in a System of Two-species Bosons in the $p$-orbital Bands of a Bipartite Lattice
• Critical behavior of a chiral superfluid in a bipartite square lattice