| Autor: |
Laudat, Théo, Dugrain, Vincent, Mazzoni, Tommaso, Huang, Meng-Zi, Alzar, Carlos L. Garrido, Sinatra, Alice, Rosenbusch, Peter, Reichel, Jakob |
| Rok vydání: |
2018 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/1367-2630/aacf1e |
| Popis: |
We describe an experiment where spin squeezing occurs spontaneously within a standard Ramsey sequence driving a two-component Bose-Einstein condensate (BEC) of 87Rb atoms trapped in an elongated magnetic trap. Multiparticle entanglement is generated by state-dependent collisional interactions, despite the near-identical scattering lengths of the spin states in 87Rb. In our proof-of-principle experiment, we observe a metrological spin squeezing that reaches 1.3+/-0.4dB for 5000 atoms, with a contrast of 90+/-1%. The method may be applied to realize spin-squeezed BEC sources for atom interferometry without the need for cavities, state-dependent potentials or Feshbach resonances. |
| Databáze: |
arXiv |
| Externí odkaz: |
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