Experimental realization of a long-lived striped Bose-Einstein condensate induced by momentum-space hopping
| Autor: | Thomas Bersano, Xi-Wang Luo, Sean Mossman, Kuei Sun, Vandna Gokhroo, Chuanwei Zhang, Peter Engels, Junpeng Hou |
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| Rok vydání: | 2019 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Optical lattice Rabi cycle Condensed matter physics Condensed Matter::Other Position and momentum space 01 natural sciences 3. Good health 010305 fluids & plasmas law.invention Superfluidity Ultracold atom law Lattice (order) 0103 physical sciences 010306 general physics Ground state Bose–Einstein condensate |
| Zdroj: | Physical Review A. 99 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.99.051602 |
| Popis: | The search for supersolidlike phases has attracted great attention in the fields of condensed matter and ultracold atom physics. Here, we experimentally demonstrate a route for realizing a superfluid stripe phase in a spin-orbit coupled Bose-Einstein condensate by employing a weak optical lattice to induce momentum-space hopping between two spin-orbit band minima. We characterize the striped ground state as a function of lattice coupling strength and spin-orbit detuning and find good agreement with mean-field simulations. We observe coherent Rabi oscillations in momentum space between two band minima and demonstrate a long lifetime of the ground state. Our work offers an exciting and stable experimental platform for exploring superfluid stripe phases and their exotic excitations, which may shed light on the properties of supersolidlike states. |
| Databáze: | OpenAIRE |
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