Journal
PHYSICAL REVIEW B
Volume 78, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.165128
Keywords
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Funding
- PFI foundation of the EJ-GV
- DGS [BFM 2003-05316-C02-01]
- CAM-UCM [910758]
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We propose a protocol to demonstrate the topological order of a spin-1/2 lattice model with four-body interactions. Unlike other proposals, it does not rely on the controlled movement of quasiparticles, thus eliminating the addressing, decoherence, and dynamical phase problems related to them. Rather, the protocol profits from the degeneracy of the ground state. It involves the addition of Zeeman terms to the original Hamiltonian that are used to create holes and move them around in the system.
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