High-energy Bragg scattering measurements of a dipolar supersolid

• URL: http://arxiv.org/abs/2005.02213v2
• Date: Fri, 8 May 2020 07:08:43 GMT
• Title: High-energy Bragg scattering measurements of a dipolar supersolid
• Authors: D. Petter, A. Patscheider, G. Natale, M. J. Mark, M. A. Baranov, R. v. Bijnen, S. M. Roccuzzo, A. Recati, B. Blakie, D. Baillie, L. Chomaz, and F. Ferlaino
• Abstract summary: Using Bragg spectroscopy, we study the scattering response of the system to a high-energy probe. We experimentally observe a continuous reduction of the response when tuning the contact interaction from an ordinary Bose-Einstein condensate to a supersolid state.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present an experimental and theoretical study of the high-energy excitation spectra of a dipolar supersolid. Using Bragg spectroscopy, we study the scattering response of the system to a high-energy probe, enabling measurements of the dynamic structure factor. We experimentally observe a continuous reduction of the response when tuning the contact interaction from an ordinary Bose-Einstein condensate to a supersolid state. Yet the observed reduction is faster than the one theoretically predicted by the Bogoliubov-de-Gennes theory. Based on an intuitive semi-analytic model and real-time simulations, we primarily attribute such a discrepancy to the out-of-equilibrium phase dynamics, which although not affecting the system global coherence, reduces its response.

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