Decoherence-free quantum information in Markovian systems
Quantum Physics
2008-08-13 v1
Abstract
Decoherence in Markovian systems can result indirectly from the action of a system Hamiltonian which is usually fixed and unavoidable. Here, we show that in general in Markovian systems, because of the system Hamiltonian, quantum information decoheres. We give conditions for the system Hamiltonian that must be satisfied if coherence is to be preserved. Finally, we show how to construct robust subspaces for quantum information processing.
Cite
@article{arxiv.0808.1640,
title = {Decoherence-free quantum information in Markovian systems},
author = {Manas K. Patra and Peter G. Brooke},
journal= {arXiv preprint arXiv:0808.1640},
year = {2008}
}
Comments
4 pages, published version