dorsal/arxiv
View SchemaSingle photon continuous variable quantum key distribution based on energy-time uncertainty relation
| Authors | Bing Qi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0602158 |
| URL | https://arxiv.org/abs/quant-ph/0602158 |
| DOI | 10.1364/OL.31.002795 |
| Journal | Optics Letters Vol.31 p2795-2797 (2006) |
Abstract
In previous quantum key distribution (QKD) protocols, information is encoded on either the discrete-variable of single-photon signal or continuous-variables of multi-photon signal. Here, we propose a new QKD protocol by encoding information on continuous-variables of a single photon. In this protocol, Alice randomly encodes her information on either the central frequency of a narrow-band single photon pulse or the time-delay of a broadband single photon pulse, while Bob randomly chooses to do either frequency measurement or time measurement. The security of this protocol rests on the energy-time uncertainty relation, which prevents Eve from simultaneously determining both frequency and time information with arbitrarily high resolution. In practice, this scheme may be more robust against various channel noises, such as polarization and phase fluctuations.
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"abstract": "In previous quantum key distribution (QKD) protocols, information is encoded\non either the discrete-variable of single-photon signal or continuous-variables\nof multi-photon signal. Here, we propose a new QKD protocol by encoding\ninformation on continuous-variables of a single photon. In this protocol, Alice\nrandomly encodes her information on either the central frequency of a\nnarrow-band single photon pulse or the time-delay of a broadband single photon\npulse, while Bob randomly chooses to do either frequency measurement or time\nmeasurement. The security of this protocol rests on the energy-time uncertainty\nrelation, which prevents Eve from simultaneously determining both frequency and\ntime information with arbitrarily high resolution. In practice, this scheme may\nbe more robust against various channel noises, such as polarization and phase\nfluctuations.",
"arxiv_id": "quant-ph/0602158",
"authors": [
"Bing Qi"
],
"categories": [
"quant-ph"
],
"doi": "10.1364/OL.31.002795",
"journal_ref": "Optics Letters Vol.31 p2795-2797 (2006)",
"title": "Single photon continuous variable quantum key distribution based on energy-time uncertainty relation",
"url": "https://arxiv.org/abs/quant-ph/0602158"
},
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