Universal quantum computation in decoherence-free subspaces with hot trapped-ions

Abstract

We consider interactions that generate a universal set of quantum gates on logical qubits encoded in a collective-dephasing-free subspace, and discuss their implementations with trapped ions. This allows for the removal of the by-far largest source of decoherence in current trapped-ion experiments, collective dephasing. In addition, an explicit parametrization of all two-body Hamiltonians able to generate such gates without the system's state ever exiting the protected subspace is provided.

8 pages, 1 figure

References in corpus (2)

• Holonomic quantum computation in decoherence-free subspaces
• Scalable solid-state quantum computation in decoherence-free subspaces with trapped ions

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