Experimental investigation of a two-qubit decoherence-free subspace |
| |
Authors: | Altepeter J B Hadley P G Wendelken S M Berglund A J Kwiat P G |
| |
Institution: | Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA. |
| |
Abstract: | We thoroughly explore the phenomenon of a decoherence-free subspace (DFS) for two-qubit systems. Specifically, we both collectively and noncollectively decohere entangled polarization-encoded two-qubit states using thick birefringent crystals. These results characterize the basis-dependent effect of decoherence on the four Bell states, the robustness of the DFS state against perturbations in the assumption of collective decoherence, and the existence of a DFS for each type of stable noncollective decoherence. Finally, we investigate the effects of collective and noncollective dissipation. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|