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Creating a supersolid in one-dimensional Bose mixtures



Ludwig G. Mathey, Ippei Danshita, Charles W. Clark


We identify a one-dimensional supersolid phase in a binary mixture of near-hardcore bosons with weak, local interspecies repulsion. We find realistic conditions under which such a phase, defined here as the coexistence of quasi-superfluidity and quasi-charge density wave order, can be produced and verified in finite ultra-cold atom systems in a harmonic trap. Our analysis is based on Luttinger liquid theory supported with numerical calculations using the time-evolving block decimation method. Clear experimental signatures of these two orders can be found, respectively, in time-of-flight interference patterns, and the structure factor S(k) derived from density correlations.
Physical Review Letters


supersolid, ultra-cold, atoms, optical lattice, Luttinger liquid, TEBD, DMRG, superfluid, charge density wave, structure factor, time-of-flight, interference


Mathey, L. , Danshita, I. and Clark, C. (2009), Creating a supersolid in one-dimensional Bose mixtures, Physical Review Letters, [online], (Accessed May 21, 2024)


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Created January 15, 2009, Updated February 17, 2017