TY  - JOUR
AU  - Lydersen, Lars
AU  - Wiechers, Carlos
AU  - Wittmann, Christoffer
AU  - Elser, Dominique
AU  - Skaar, Johannes
AU  - Makarov, Vadim
PY  - 2010
DA  - 2010//
TI  - Hacking commercial quantum cryptography systems by tailored bright illumination
T2  - Nat. Photon.
JO  - Nature Photonics
SP  - 686
EP  - 689
VL  - 4
IS  - 10
KW  - quantum cryptography
KW  - hacking
KW  - QKD
KW  - APD
AB  - The peculiar properties of quantum mechanics allow two remote parties to communicate a private, secret key, which is protected from eavesdropping by the laws of physics. So-called quantum key distribution (QKD) implementations always rely on detectors to measure the relevant quantum property of single photons. Here we demonstrate experimentally that the detectors in two commercially available QKD systems can be fully remote-controlled using specially tailored bright illumination. This makes it possible to tracelessly acquire the full secret key; we propose an eavesdropping apparatus built of off-the-shelf components. The loophole is likely to be present in most QKD systems using avalanche photodiodes to detect single photons. We believe that our findings are crucial for strengthening the security of practical QKD, by identifying and patching technological deficiencies.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=657), last updated on Fri, 03 Feb 2012 13:59:26 -0600
ID  - Lydersen_etal2010
ER  -