'Standard' qubits have been implemented in diverse physical systems. Now, so-called topological qubits are coming into the limelight, and could potentially be used for decoherence-free quantum computing. Coupling these two types of qubit might enable devices that exploit the virtues of both.
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Vishveshwara, S. A bit of both. Nature Phys 7, 450–451 (2011). https://doi.org/10.1038/nphys2014