dorsal/arxiv
View SchemaQuantum Cryptography with Imperfect Apparatus
| Authors | Dominic Mayers, Andrew Yao |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9809039 |
| URL | https://arxiv.org/abs/quant-ph/9809039 |
Abstract
Quantum key distribution, first proposed by Bennett and Brassard, provides a possible key distribution scheme whose security depends only on the quantum laws of physics. So far the protocol has been proved secure even under channel noise and detector faults of the receiver, but is vulnerable if the photon source used is imperfect. In this paper we propose and give a concrete design for a new concept, {\it self-checking source}, which requires the manufacturer of the photon source to provide certain tests; these tests are designed such that, if passed, the source is guaranteed to be adequate for the security of the quantum key distribution protocol, even though the testing devices may not be built to the original specification. The main mathematical result is a structural theorem which states that, for any state in a Hilbert space, if certain EPR-type equations are satisfied, the state must be essentially the orthogonal sum of EPR pairs.
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"abstract": "Quantum key distribution, first proposed by Bennett and Brassard, provides a\npossible key distribution scheme whose security depends only on the quantum\nlaws of physics. So far the protocol has been proved secure even under channel\nnoise and detector faults of the receiver, but is vulnerable if the photon\nsource used is imperfect. In this paper we propose and give a concrete design\nfor a new concept, {\\it self-checking source}, which requires the manufacturer\nof the photon source to provide certain tests; these tests are designed such\nthat, if passed, the source is guaranteed to be adequate for the security of\nthe quantum key distribution protocol, even though the testing devices may not\nbe built to the original specification. The main mathematical result is a\nstructural theorem which states that, for any state in a Hilbert space, if\ncertain EPR-type equations are satisfied, the state must be essentially the\northogonal sum of EPR pairs.",
"arxiv_id": "quant-ph/9809039",
"authors": [
"Dominic Mayers",
"Andrew Yao"
],
"categories": [
"quant-ph"
],
"title": "Quantum Cryptography with Imperfect Apparatus",
"url": "https://arxiv.org/abs/quant-ph/9809039"
},
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