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- Publisher Website: 10.1103/PhysRevA.72.012326
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Article: Practical decoy state for quantum key distribution
Title | Practical decoy state for quantum key distribution |
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Authors | |
Issue Date | 2005 |
Citation | Physical Review A - Atomic, Molecular, and Optical Physics, 2005, v. 72, n. 1, article no. 012326 How to Cite? |
Abstract | Decoy states have recently been proposed as a useful method for substantially improving the performance of quantum key distribution (QKD). Here, we present a general theory of the decoy state protocol based on only two decoy states and one signal state. We perform optimization on the choice of intensities of the two decoy states and the signal state. Our result shows that a decoy state protocol with only two types of decoy states\'e2\'80\rdblquote the vacuum and a weak decoy state\'e2\'80\rdblquote asymptotically approaches the theoretical limit of the most general type of decoy state protocol (with an infinite number of decoy states). We also present a one-decoy-state protocol. Moreover, we provide estimations on the effects of statistical fluctuations and suggest that, even for long-distance (larger than 100 km) QKD, our two-decoy-state protocol can be implemented with only a few hours of experimental data. In conclusion, decoy state quantum key distribution is highly practical. © 2005 The American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/285893 |
ISSN | 2014 Impact Factor: 2.808 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ma, Xiongfeng | - |
dc.contributor.author | Qi, Bing | - |
dc.contributor.author | Zhao, Yi | - |
dc.contributor.author | Lo, Hoi Kwong | - |
dc.date.accessioned | 2020-08-18T04:56:55Z | - |
dc.date.available | 2020-08-18T04:56:55Z | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | Physical Review A - Atomic, Molecular, and Optical Physics, 2005, v. 72, n. 1, article no. 012326 | - |
dc.identifier.issn | 1050-2947 | - |
dc.identifier.uri | http://hdl.handle.net/10722/285893 | - |
dc.description.abstract | Decoy states have recently been proposed as a useful method for substantially improving the performance of quantum key distribution (QKD). Here, we present a general theory of the decoy state protocol based on only two decoy states and one signal state. We perform optimization on the choice of intensities of the two decoy states and the signal state. Our result shows that a decoy state protocol with only two types of decoy states\'e2\'80\rdblquote the vacuum and a weak decoy state\'e2\'80\rdblquote asymptotically approaches the theoretical limit of the most general type of decoy state protocol (with an infinite number of decoy states). We also present a one-decoy-state protocol. Moreover, we provide estimations on the effects of statistical fluctuations and suggest that, even for long-distance (larger than 100 km) QKD, our two-decoy-state protocol can be implemented with only a few hours of experimental data. In conclusion, decoy state quantum key distribution is highly practical. © 2005 The American Physical Society. | - |
dc.language | eng | - |
dc.relation.ispartof | Physical Review A - Atomic, Molecular, and Optical Physics | - |
dc.title | Practical decoy state for quantum key distribution | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevA.72.012326 | - |
dc.identifier.scopus | eid_2-s2.0-27144453296 | - |
dc.identifier.volume | 72 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | article no. 012326 | - |
dc.identifier.epage | article no. 012326 | - |
dc.identifier.eissn | 1094-1622 | - |
dc.identifier.isi | WOS:000230887300056 | - |
dc.identifier.issnl | 1050-2947 | - |