The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Practical decoy state for quantum key distribution
Open accessAbstract
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---the vacuum and a weak decoy state---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.
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Citations
Cites
Quantum information and computation
Bennett, C. H., & DiVincenzo, D. P. (2000) · Nature · doi:10.1038/35005001 · Cited by 3,263
Cited by
Advances in quantum cryptography
Pirandola, S., Andersen, U. L., Banchi, L., Berta, M., Bunandar, D., Colbeck, R., Englund, D., Gehring, T., Lupo, C., Ottaviani, C., et al. (2020) · Advances in Optics and Photonics · doi:10.1364/aop.361502 · Cited by 2,033
Secure quantum key distribution with realistic devices
Xu, F., Ma, X., Zhang, Q., Lo, H.-K., & Pan, J.-W. (2020) · Reviews of Modern Physics · doi:10.1103/revmodphys.92.025002 · Cited by 1,543
Self-citationInvited Review Article: Single-photon sources and detectors
Eisaman, M. D., Fan, J., Migdall, A., & Polyakov, S. V. (2011) · Review of Scientific Instruments · doi:10.1063/1.3610677 · Cited by 1,358
Field test of quantum key distribution in the Tokyo QKD Network
Sasaki, M., Fujiwara, M., Ishizuka, H., Klaus, W., Wakui, K., Takeoka, M., Miki, S., Yamashita, T., Wang, Z., Tanaka, A., et al. (2011) · Optics Express · doi:10.1364/oe.19.010387 · Cited by 1,082
Zhao, Y., Fung, C.-H. F., Qi, B., Chen, C., & Lo, H.-K. (2008) · Physical Review A · doi:10.1103/physreva.78.042333 · Cited by 511
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Metadata
- Authors
- Ma, X., Qi, B., Zhao, Y., & Lo, H.-K.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2005-07-20
- Volume
- 72
- Issue
- 1
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2100257068
- Cited by
- 1,131
- References
- 1
- FWCI
- 23.70
- Type
- journal article
- Language
- en
- Open access
- green
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- Ma, X., Qi, B., Zhao, Y., & Lo, H.-K. (2005). Practical decoy state for quantum key distribution. Physical Review A. https://doi.org/10.1103/physreva.72.012326
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