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Unambiguous state discrimination in quantum cryptography with weak coherent states
Open accessAbstract
The use of linearly independent signal states in realistic implementations of quantum key distribution (QKD) enables an eavesdropper to perform unambiguous state discrimination. We explore quantitatively the limits for secure QKD imposed by this fact taking into account that the receiver can monitor, to some extent the photon-number statistics of the signals even with todays standard detection schemes. We compare our attack to the beam-splitting attack and show that security against the beam-splitting attack does not necessarily imply security against the attack considered here.
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Citations
Cited by
Gisin, N., Ribordy, G., Tittel, W., & Zbinden, H. (2002) · Reviews of Modern Physics · doi:10.1103/revmodphys.74.145 · Cited by 8,515
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
Specht, H. P., Nölleke, C., Reiserer, A., Uphoff, M., Figueroa, E., Ritter, S., & Rempe, G. (2011) · Nature · doi:10.1038/nature09997 · Cited by 411
Chen, J.-P., Zhang, C., Liu, Y., Jiang, C., Zhang, W., Hu, X.-L., Guan, J.-Y., Yu, Z.-W., Xu, H., Lin, J., et al. (2020) · Physical Review Letters · doi:10.1103/physrevlett.124.070501 · Cited by 380
Security of two quantum cryptography protocols using the same four qubit states
Branciard, C., Gisin, N., Kraus, B., & Scarani, V. (2005) · Physical Review A · doi:10.1103/physreva.72.032301 · Cited by 146
Metadata
- Authors
- Dušek, M., Jahma, M., & Lütkenhaus, N.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2000-07-13
- Volume
- 62
- Issue
- 2
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2083665904
- Cited by
- 160
- References
- 0
- FWCI
- 5.00
- Type
- journal article
- Language
- en
- Open access
- green
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- Dušek, M., Jahma, M., & Lütkenhaus, N. (2000). Unambiguous state discrimination in quantum cryptography with weak coherent states. Physical Review A. https://doi.org/10.1103/physreva.62.022306
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