Dirac spin liquid in quantum dipole arrays
arxiv(2024)
摘要
We predict that the gapless U(1) Dirac spin liquid naturally emerges in a
two-dimensional array of quantum dipoles. In particular, we demonstrate that
the dipolar XY modelx2014realized in both Rydberg atom arrays and
ultracold polar moleculesx2014hosts a quantum spin liquid ground
state on the kagome lattice. Large-scale density matrix renormalization group
calculations indicate that this spin liquid exhibits signatures of gapless,
linearly-dispersing spinons, consistent with the U(1) Dirac spin liquid. We
identify a route to adiabatic preparation via staggered on-site fields and
demonstrate that this approach can prepare cold spin liquids within
experimentally realistic time-scales. Finally, we propose a number of novel
signatures of the Dirac spin liquid tailored to near-term quantum simulators,
including termination-dependent edge modes and the Friedel response to a local
perturbation.
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