Phase diagram and topological order in the modulated XYZ chain with magnetic field
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DOI: 10.1103/physrevb.102.054436
Abstract: The XYZ antiferromagnetic spin-$1/2$ chain with alternation of the exchange and anisotropy couplings in the presence of uniform and staggered axial magnetic fields is studied. The analysis is done using the effective quadratic fermionic Hamiltonian… read more here.
Keywords: order; phase diagram; string order; xyz chain ... See more keywords
String order parameters for symmetry fractionalization in an enriched toric code
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DOI: 10.1103/physrevb.103.125104
Abstract: We study a simple model of symmetry-enriched topological order obtained by decorating a toric code model with lower-dimensional symmetry-protected topological states. We show that the symmetry fractionalization in this model can be characterized by string… read more here.
Keywords: toric code; order; symmetry fractionalization; order parameters ... See more keywords
Quantum Computational Advantage with String Order Parameters of One-Dimensional Symmetry-Protected Topological Order.
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DOI: 10.1103/physrevlett.126.090505
Abstract: Nonlocal games with advantageous quantum strategies give arguably the most fundamental demonstration of the power of quantum resources over their classical counterparts. Recently, certain multiplayer generalizations of nonlocal games have been used to prove unconditional… read more here.
Keywords: dimensional symmetry; order; protected topological; string order ... See more keywords