Universal quantum computation in decoherence-free subspaces with hot trapped-ions
Quantum Physics
2016-08-14 v1
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.
Cite
@article{arxiv.0706.0203,
title = {Universal quantum computation in decoherence-free subspaces with hot trapped-ions},
author = {Leandro Aolita and Luiz Davidovich and Kihwan Kim and Hartmut Häffner},
journal= {arXiv preprint arXiv:0706.0203},
year = {2016}
}