Stabilisation of Quantum Computations by Symmetrisation
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 quan...
| Main Authors: | , , , , , |
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| Format: | Journal article |
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1996
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| _version_ | 1826290408421851136 |
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| author | Barenco, A Berthiaume, A Deutsch, D Ekert, A Jozsa, R Macchiavello, C |
| author_facet | Barenco, A Berthiaume, A Deutsch, D Ekert, A Jozsa, R Macchiavello, C |
| author_sort | Barenco, A |
| collection | OXFORD |
| description | 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 arising from external environmental interaction. Finally, limitations of the method are discussed. |
| first_indexed | 2024-03-07T02:43:44Z |
| format | Journal article |
| id | oxford-uuid:ab523460-551b-442c-9f68-abe351d32539 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T02:43:44Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:ab523460-551b-442c-9f68-abe351d325392022-03-27T03:21:10ZStabilisation of Quantum Computations by SymmetrisationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ab523460-551b-442c-9f68-abe351d32539Symplectic Elements at Oxford1996Barenco, ABerthiaume, ADeutsch, DEkert, AJozsa, RMacchiavello, CWe 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 arising from external environmental interaction. Finally, limitations of the method are discussed. |
| spellingShingle | Barenco, A Berthiaume, A Deutsch, D Ekert, A Jozsa, R Macchiavello, C Stabilisation of Quantum Computations by Symmetrisation |
| title | Stabilisation of Quantum Computations by Symmetrisation |
| title_full | Stabilisation of Quantum Computations by Symmetrisation |
| title_fullStr | Stabilisation of Quantum Computations by Symmetrisation |
| title_full_unstemmed | Stabilisation of Quantum Computations by Symmetrisation |
| title_short | Stabilisation of Quantum Computations by Symmetrisation |
| title_sort | stabilisation of quantum computations by symmetrisation |
| work_keys_str_mv | AT barencoa stabilisationofquantumcomputationsbysymmetrisation AT berthiaumea stabilisationofquantumcomputationsbysymmetrisation AT deutschd stabilisationofquantumcomputationsbysymmetrisation AT ekerta stabilisationofquantumcomputationsbysymmetrisation AT jozsar stabilisationofquantumcomputationsbysymmetrisation AT macchiavelloc stabilisationofquantumcomputationsbysymmetrisation |