Abstract
We demonstrate microscopically the existence of a new superfluid state of matter in a three-component Bose mixture trapped in an optical lattice. The superfluid transport involving coflow of all three components is arrested in that state, while counterflows between any pair of components are dissipationless. The presence of three components allows for three different types of counterflows with only two independent superfluid degrees of freedom.
Highlights
The advent of optical lattices [1,2,3,4,5,6] allowed for highly controllable access to strongly correlated quantum manybody systems and opened up a way to realize various phases of matter
In this Letter, we demonstrate microscopically the existence of a new “super”
The Andreev-Bashkin effect can be well controlled in optical lattices [7,8,11,16,28,29,30]
Summary
The advent of optical lattices [1,2,3,4,5,6] allowed for highly controllable access to strongly correlated quantum manybody systems and opened up a way to realize various phases of matter. In a supercounterfluid phase, individual bosonic species do not exhibit superfluidity, but the transport of particle-hole composites is dissipationless. In the two-component case, the order parameter for the supercounterfluid is partially similar to a condensate of bound particle-hole pairs between two different components.
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