Quantum magnetism with polar alkali-metal dimers

By Alexey V. Gorshkov, Salvatore R. Manmana, Gang Chen, E. Demler, Mikhail D. Lukin, Ana Maria Rey. 2011

135 citations recorded by the source corpus.

We show that dipolar interactions between ultracold polar alkali-metal dimers in optical lattices can be used to realize a highly tunable generalization of the t-J model, which we refer to as the t-J -V -W model. The model features long-range spin-spin interactions Jz and J⊥ of XXZ type, long-range density-density interaction V ,a nd long-range density-spin interaction W , all of which can be controlled in both magnitude and sign independently of each other and of the tunneling t. The “spin” is encoded in the rotational degree of freedom of the molecules, while the interactions are controlled by applied static electric and continuous-wave microwave fields. Furthermore, we show that nuclear spins of the molecules can be used to implement an additional (orbital) degree of freedom that is coupled to the original rotational degree of freedom in a tunable way. The presented system is expected to exhibit exotic physics and to provide insights into strongly correlated phenomena in condensed-matter systems. Realistic experimental imperfections are discussed.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/87a36cf845ff1e70011844cc3a9d33b32844e1fc

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In Atomic and Molecular Physics, and Optics

In Condensed Matter Physics

Citations in the corpus

Robust Encoding of a Qubit in a Molecule (2019, background): “We have neglected rotational-state-dependent trapping effects, which are prominent in optical dipole traps [44, 60–62].”