dorsal/arxiv
View SchemaConclusive Entangling Probe
| Authors | Howard E. Brandt |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0509088 |
| URL | https://arxiv.org/abs/quant-ph/0509088 |
Abstract
A design is given for an optimized entangling probe attacking the BB84 (Bennett-Brassard 1984) protocol of quantum key distribution and yielding maximum information to the probe for a full range of induced error rates. Probe photon polarization states become optimally entangled with the signal states on their way between the legitimate transmitter and receiver. Although standard von-Neumann projective measurements of the probe yield maximum information on the pre-privacy amplified key, if instead the probe measurements are performed with a certain positive operator valued measure, then the measurement results are conclusive, at least some of the time, for a full range of inconclusive rates.
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"abstract": "A design is given for an optimized entangling probe attacking the BB84\n(Bennett-Brassard 1984) protocol of quantum key distribution and yielding\nmaximum information to the probe for a full range of induced error rates. Probe\nphoton polarization states become optimally entangled with the signal states on\ntheir way between the legitimate transmitter and receiver. Although standard\nvon-Neumann projective measurements of the probe yield maximum information on\nthe pre-privacy amplified key, if instead the probe measurements are performed\nwith a certain positive operator valued measure, then the measurement results\nare conclusive, at least some of the time, for a full range of inconclusive\nrates.",
"arxiv_id": "quant-ph/0509088",
"authors": [
"Howard E. Brandt"
],
"categories": [
"quant-ph"
],
"title": "Conclusive Entangling Probe",
"url": "https://arxiv.org/abs/quant-ph/0509088"
},
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