Quasiparticle spectra of supersolid lattice gases at near-resonant Rydberg dressing
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PhysRevA.98.063635.pdf
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Author(s)
Geißler, Andreas
Bissbort, Ulf
Hofstetter, Walter
Date Issued
December 2018
Journal
Physical Review A
Publisher
American Physical Society
Citation
Geißler, Andreas et al. "Quasiparticle spectra of supersolid lattice gases at near-resonant Rydberg dressing." Physical Review A 98, 6 (December 2018): 063635 © 2018 American Physical Society
Version
Final published version
Abstract
One of the major challenges in realizing a strongly interacting lattice gas using Rydberg states is the occurrence of avalanche loss processes. As these are directly proportional to the total Rydberg fraction, the commonly suggested solution is using far off-resonantly excited Rydberg states. We instead propose the realization of a correlated bosonic lattice gas at near-resonant excitation, where the total Rydberg fraction in the bulk is low due to the strong, interaction-driven effective detuning. Using real-space dynamical mean-field theory we show that its reduced effect at the boundary of a system can easily be compensated by considering a tailored beam waist of the driving Rabi laser. In this geometry we discuss the spectral properties at the crossover between the supersolid and the superfluid state and present the momentum-resolved spectral properties of the supersolid bulk. The latter results are obtained within an extended quasiparticle method which also yields a correction of the mean-field phase transition.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.98.063635
