Concatenating Decoherence Free Subspaces with Quantum Error Correcting Codes
Lidar, D. A. ; Bacon, D. ; Whaley, K. B.
arXiv, 9809081 / Harvested from arXiv
Text on arXiv
An operator sum representation is derived for a decoherence-free subspace (DFS) and used to (i) show that DFSs are the class of quantum error correcting codes (QECCs) with fixed, unitary recovery operators, and (ii) find explicit representations for the Kraus operators of collective decoherence. We demonstrate how this can be used to construct a concatenated DFS-QECC code which protects against collective decoherence perturbed by independent decoherence. The code yields an error threshold which depends only on the perturbing independent decoherence rate.
Publié le : 1998-09-27
Classification:  Quantum Physics,  Computer Science - Information Theory,  Mathematical Physics 
@article{9809081,
     author = {Lidar, D. A. and Bacon, D. and Whaley, K. B.},
     title = {Concatenating Decoherence Free Subspaces with Quantum Error Correcting
  Codes},
     journal = {arXiv},
     volume = {1998},
     number = {0},
     year = {1998},
     language = {en},
     url = {http://dml.mathdoc.fr/item/9809081}
}

Lidar, D. A.; Bacon, D.; Whaley, K. B. Concatenating Decoherence Free Subspaces with Quantum Error Correcting
  Codes. arXiv, Tome 1998 (1998) no. 0, . http://gdmltest.u-ga.fr/item/9809081/