dorsal/arxiv
View SchemaBell's Inequality, Random Sequence, and Quantum Key Distribution
| Authors | W. -Y. Hwang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0501162 |
| URL | https://arxiv.org/abs/quant-ph/0501162 |
| DOI | 10.1103/PhysRevA.71.052329 |
| Journal | Physical Review A 71, 052329 (2005) |
Abstract
The Ekert 91 quantum key distribution (QKD) protocol appears to be secure whatever devices legitimate users adopt for the protocol, as long as the devices give a result that violates Bell's inequality. However, this is not the case if they ignore non-detection events because Eve can make use of the detection-loophole, as Larrson showed. We show that even when legitimate users take into account non-detection events Eve can successfully eavesdrop if the QKD system has been appropriately designed by the manufacturer. A loophole utilized here is that of `free-choice' (or `real randomness'). Local QKD devices with pseudo-random sequence generator installed in them can apparently violate Bell's inequality.
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"abstract": "The Ekert 91 quantum key distribution (QKD) protocol appears to be secure\nwhatever devices legitimate users adopt for the protocol, as long as the\ndevices give a result that violates Bell\u0027s inequality. However, this is not the\ncase if they ignore non-detection events because Eve can make use of the\ndetection-loophole, as Larrson showed. We show that even when legitimate users\ntake into account non-detection events Eve can successfully eavesdrop if the\nQKD system has been appropriately designed by the manufacturer. A loophole\nutilized here is that of `free-choice\u0027 (or `real randomness\u0027). Local QKD\ndevices with pseudo-random sequence generator installed in them can apparently\nviolate Bell\u0027s inequality.",
"arxiv_id": "quant-ph/0501162",
"authors": [
"W. -Y. Hwang"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.052329",
"journal_ref": "Physical Review A 71, 052329 (2005)",
"title": "Bell\u0027s Inequality, Random Sequence, and Quantum Key Distribution",
"url": "https://arxiv.org/abs/quant-ph/0501162"
},
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