Period-doubling Instability of Bose-Einstein Condensates Induced in Periodically Translated Optical Lattices

Abstract

We observe the formation of momentum distributions indicative of spatial period-doubling of superfluid Bose-Einstein condensates in periodically translated optical lattices. The effect is attributed to dynamic instability of the condensate wavefunction caused by modulation-induced coupling of ground and excited bands.

References in corpus (2)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Phase-matched four wave mixing and quantum beam splitting of matter waves in a periodic potential

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