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Author |
Килин, С. Я. |
Title |
Квантовая информация |
Type |
Journal Article |
Year |
1999 |
Publication |
Успехи физических наук |
Abbreviated Journal |
УФН |
Volume |
169 |
Issue |
5 |
Pages |
507-527 |
Keywords |
quantum cryptography; QKD, BB84 |
Abstract |
Новое направление физики – квантовая информация – возникло на стыке квантовой механики, оптики, теории относительности и программирования, дискретной математики, лазерной физики и спектроскопии и включает в себя вопросы квантовых вычислений, квантовых компьютеров, квантовой телепортации и квантовой криптографии, проблемы декогеренции и спектроскопии одиночных молекул и примесных центров. Сообщается о некоторых новых результатах в этой быстро развивающейся области исследований. |
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RPLAB @ gujma @ |
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732 |
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Author |
Lydersen, Lars; Wiechers, Carlos; Wittmann, Christoffer; Elser, Dominique; Skaar, Johannes; Makarov, Vadim |
Title |
Thermal blinding of gated detectors in quantum cryptography |
Type |
Journal Article |
Year |
2010 |
Publication |
Optics Express |
Abbreviated Journal |
Opt. Express |
Volume |
18 |
Issue |
26 |
Pages |
27938-27954 |
Keywords |
quantum cryptography; QKD; hacking; SPD; APD |
Abstract |
It has previously been shown that the gated detectors of two commercially available quantum key distribution (QKD) systems are blindable and controllable by an eavesdropper using continuous-wave illumination and short bright trigger pulses, manipulating voltages in the circuit [L. Lydersen et al., Nat. Photonics DOI:10.1038/nphoton.2010.214]. This allows for an attack eavesdropping the full raw and secret key without increasing the quantum bit error rate (QBER). Here we show how thermal effects in detectors under bright illumination can lead to the same outcome. We demonstrate that the detectors in a commercial QKD system Clavis2 can be blinded by heating the avalanche photo diodes (APDs) using bright illumination, so-called thermal blinding. Further, the detectors can be triggered using short bright pulses once they are blind. For systems with pauses between packet transmission such as the plug-and-play systems, thermal inertia enables Eve to apply the bright blinding illumination before eavesdropping, making her more difficult to catch. |
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RPLAB @ gujma @ |
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729 |
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Author |
Esteban, Eduin; Serna, Hernandez |
Title |
Quantum key distribution protocol with private-public key |
Type |
Journal Article |
Year |
2009 |
Publication |
arXiv |
Abbreviated Journal |
arXiv |
Volume |
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Issue |
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Pages |
3 |
Keywords |
quantum cryptography; QKD; protocol |
Abstract |
A quantum cryptographic protocol based in public key cryptography combinations and private key cryptography is presented. Unlike the BB84 protocol 1 and its many variants 2,3 two quantum channels are used. The present research does not make reconciliation mechanisms of information to derive the key. A three related system of key distribution are described. |
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arXiv: 0908.2146 |
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RPLAB @ gujma @ |
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756 |
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Author |
Hadfield, Robert. H.; Habif, Jonathan L.; Schlafer, John; Schwall, Robert. E.; Nam, Sae Woo |
Title |
Quantum key distribution at 1550 nm with twin superconducting single-photon detectors |
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Journal Article |
Year |
2006 |
Publication |
Applied Physics Letters |
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Appl. Phys. Lett. |
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89 |
Issue |
24 |
Pages |
241129 |
Keywords |
SSPD, quantum cryptography |
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0003-6951 |
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533 |
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Stucki, D.; Walenta, N.; Vannel, F.; Thew, R.T.; Gisin, N.; Zbinden, H.; Gray, S.; Towery, C. R.; Ten, S. |
Title |
High rate long-distance quantum key distribution over 250 km of ultra low loss fibres |
Type |
Journal Article |
Year |
2009 |
Publication |
New J. Phys. |
Abbreviated Journal |
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Volume |
11 |
Issue |
7 |
Pages |
075003 |
Keywords |
SSPD, quantum cryptography, QKD, COW |
Abstract |
We present a fully automated quantum key distribution prototype running at 625 MHz clock rate. Taking advantage of ultra low loss fibres and low-noise superconducting detectors, we can distribute 6,000 secret bits per second over 100 km and 15 bits per second over 250km. |
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RPLAB @ akorneev @ |
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610 |
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