Journal article

### Stabilisation of Quantum Computations by Symmetrisation

Abstract:

We propose a method for the stabilisation of quantum computations (including quantum state storage). The method is based on the operation of projection into $\cal SYM$, the symmetric subspace of the full state space of $R$ redundant copies of the computer. We describe an efficient algorithm and quantum network effecting $\cal SYM$--projection and discuss the stabilising effect of the proposed method in the context of unitary errors generated by hardware imprecision, and nonunitary errors aris...

### Access Document

Publisher copy:
10.1137/S0097539796302452

### Authors

Journal:
SIAM J. Comput.
Volume:
26
Issue:
5
Pages:
1541-1557
Publication date:
1996-04-25
DOI:
EISSN:
1095-7111
ISSN:
0097-5397
Source identifiers:
313231
Keywords:
Pubs id:
pubs:313231
UUID:
uuid:ab523460-551b-442c-9f68-abe351d32539
Local pid:
pubs:313231
Deposit date:
2012-12-19