Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels.
Existing quantum cryptographic schemes are not, as they stand, operable in the presence of noise on the quantum communication channel. Although they become operable if they are supplemented by classical privacy-amplification techniques, the resulting schemes are difficult to analyze and have not bee...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1996
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| _version_ | 1797058974658330624 |
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| author | Deutsch, D Ekert, A Jozsa, R Macchiavello, C Popescu, S Sanpera, A |
| author_facet | Deutsch, D Ekert, A Jozsa, R Macchiavello, C Popescu, S Sanpera, A |
| author_sort | Deutsch, D |
| collection | OXFORD |
| description | Existing quantum cryptographic schemes are not, as they stand, operable in the presence of noise on the quantum communication channel. Although they become operable if they are supplemented by classical privacy-amplification techniques, the resulting schemes are difficult to analyze and have not been proved secure. We introduce the concept of quantum privacy amplification and a cryptographic scheme incorporating it which is provably secure over a noisy channel. The scheme uses an "entanglement purification" procedure which, because it requires only a few quantum controlled-not and single-qubit operations, could be implemented using technology that is currently being developed. |
| first_indexed | 2024-03-06T19:57:38Z |
| format | Journal article |
| id | oxford-uuid:2632595a-188b-4ff8-a6be-d0133d72a309 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:57:38Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:2632595a-188b-4ff8-a6be-d0133d72a3092022-03-26T11:59:30ZQuantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2632595a-188b-4ff8-a6be-d0133d72a309EnglishSymplectic Elements at Oxford1996Deutsch, DEkert, AJozsa, RMacchiavello, CPopescu, SSanpera, AExisting quantum cryptographic schemes are not, as they stand, operable in the presence of noise on the quantum communication channel. Although they become operable if they are supplemented by classical privacy-amplification techniques, the resulting schemes are difficult to analyze and have not been proved secure. We introduce the concept of quantum privacy amplification and a cryptographic scheme incorporating it which is provably secure over a noisy channel. The scheme uses an "entanglement purification" procedure which, because it requires only a few quantum controlled-not and single-qubit operations, could be implemented using technology that is currently being developed. |
| spellingShingle | Deutsch, D Ekert, A Jozsa, R Macchiavello, C Popescu, S Sanpera, A Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels. |
| title | Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels. |
| title_full | Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels. |
| title_fullStr | Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels. |
| title_full_unstemmed | Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels. |
| title_short | Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels. |
| title_sort | quantum privacy amplification and the security of quantum cryptography over noisy channels |
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