Journal
PHYSICAL REVIEW B
Volume 105, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.105.085130
Keywords
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Funding
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [647905, 863476]
- Research Foundation Flanders (FWO) [G087918N, G0E1820N]
- Bijzonder Onderzoeksfonds (BOF)
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The study constructs a constant depth quantum circuit for mapping between Morita-equivalent string-net models. The circuit, with its constant depth and unitarity, is unable to alter the topological order, thereby demonstrating that Morita-equivalent string nets are in the same phase.
We construct a constant depth quantum circuit that maps between Morita-equivalent string-net models. Due to its constant depth and unitarity, the circuit cannot alter the topological order, which demonstrates that Morita equivalent string nets are in the same phase. The circuit is constructed from an invertible bimodule category connecting the two input fusion categories of the relevant string-net models, acting as a generalized Fourier transform for fusion categories. The circuit not only acts on the ground state subspace but also acts unitarily on the full Hilbert space when supplemented with ancillas.
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