Physics – Quantum Physics
Scientific paper
2005-11-07
Phys. Rev. A 73, 012332 (2006)
Physics
Quantum Physics
15 pages, 14 figures, minor changes in the introduction and Sec. III D, typos corrected, accepted for publication in Phys. Rev
Scientific paper
10.1103/PhysRevA.73.012332
We show how to efficiently exploit decoherence free subspaces (DFSs), which are immune to collective noise, for realizing quantum repeaters with long lived quantum memories. Our setup consists of an assembly of simple modules and we show how to implement them in systems of cold, neutral atoms in arrays of dipole traps. We develop methods for realizing robust gate operations on qubits encoded in a DFS using collisional interactions between the atoms. We also give a detailed analysis of the performance and stability of all required gate operations and emphasize that all modules can be realized with current or near future experimental technology.
Alves Carolina Moura
Dorner Uwe
Jaksch Dieter
Klein Alexander
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