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Quantum Phases of Bosons in Double-Well Optical Lattices
Published
Author(s)
Ippei Danshita, J G. Williams, Carlos Sa de Melo, Charles W. Clark
Abstract
We study the superfluid to Mott insulator transition of bosons in a two-legged ladder optical lattice, of a type accessible in current experiments on double-well optical lattices. The zero-temperature phase diagram is mapped out, with a focus on its dependence upon interchain hopping and the tilt between double wells. We find that the unit-filling Mott phase exhibits a non-monotonic behavior as a function of the tilt parameter, producing a reentrant phase transition between Mott insulator and superfluid phases.
Danshita, I.
, Williams, J.
, Sa, C.
and Clark, C.
(2007),
Quantum Phases of Bosons in Double-Well Optical Lattices, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=840262
(Accessed October 22, 2025)