Quantum state transfer and teleportation, with qubits encoded in internal states of the atoms in cavities, among spatially separated nodes of a quantum network in decoherence-free subspace are proposed, based on a cavity-assisted interaction by single-photon pulses. We show in details the implementation of a logic-qubit Hadamard gate and a two-logic-qubit conditional gate, and discuss the experimental feasibility of our scheme.
@article{arxiv.0711.0265,
title = {Transfer and teleportation of quantum states encoded in decoherence-free subspace},
author = {Hua Wei and ZhiJiao Deng and XiaoLong Zhang and Mang Feng},
journal= {arXiv preprint arXiv:0711.0265},
year = {2009}
}