Anyon Hubbard Model in One-Dimensional Optical Lattices

Area of Science:

• Quantum physics
• Condensed matter physics
• Atomic physics

Background:

• The anyon Hubbard model is crucial for understanding exotic quantum phenomena.
• Previous proposals for realizing this model faced limitations in controlling interactions and constraints.

Purpose of the Study:

• To propose a feasible experimental scenario for realizing the anyon Hubbard model in one-dimensional optical lattices.
• To enable exact two-body hard-core constraints and controllable interactions without Feshbach resonances.

Main Methods:

• Utilizing Raman-assisted hopping in one-dimensional optical lattices.
• Combining anyonic statistics with a two-body hard-core constraint.

Main Results:

• Demonstration of a rich ground-state physics, including Mott insulators, pair superfluids, and dimer phases.
• Prediction of a novel two-component superfluid composed of holon and doublon dimers.
• Characterization of the superfluid's large compressibility and multipeaked momentum distribution.

Conclusions:

• The proposed method offers an exact and controllable route to the anyon Hubbard model.
• The predicted novel superfluid phases provide clear experimental signatures for verification.