Quantum dynamics of impurities in a one-dimensional Bose gas
Jacopo CataniCNR-INO, via G. Sansone 1, IT-50019 Sesto Fiorentino–Firenze, ItalyGiacomo LamporesiCNR-INO, via G. Sansone 1, IT-50019 Sesto Fiorentino–Firenze, ItalyD. NaikLENS–European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Università di Firenze, via N. Carrara 1, IT-50019 Sesto Fiorentino–Firenze, ItalyMichael GringVienna Center for Quantum Science and Technology, Atominstitut, TU-Wien, AT-1020 Vienna, AustriaM. InguscioCNR-INO, via G. Sansone 1, IT-50019 Sesto Fiorentino–Firenze, ItalyF. MinardiCNR-INO, via G. Sansone 1, IT-50019 Sesto Fiorentino–Firenze, ItalyAdrian KantianDPMC-MaNEP, University of Geneva, 24 Quai Ernest-Ansermet, CH-1211 Geneva, SwitzerlandThierry GiamarchiDPMC-MaNEP, University of Geneva, 24 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
2012en
ABI
Аннотация
Using a species-selective dipole potential, we create initially localized impurities and investigate their interactions with a majority species of bosonic atoms in a one-dimensional configuration during expansion. We find an interaction-dependent amplitude reduction of the oscillation of the impurities' size with no measurable frequency shift, and study it as a function of the interaction strength. We discuss possible theoretical interpretations of the data. We compare, in particular, with a polaronic mass shift model derived following Feynman variational approach.
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