Browsing NTNU Open by Author "Makarov, Vadim"

Now showing items 1-8 of 8

    • After-gate attack on a quantum cryptosystem 

      Wiechers, Carlos; Lydersen, Lars Vincent Van de Wiel; Wittmann, Christoffer; Elser, Dominique; Skaar, Johannes; Marquardt, Christoph; Makarov, Vadim; Leuchs, Gerd (Journal article; Peer reviewed, 2011)
      We present a method to control the detection events in quantum key distribution systems that use gated single-photon detectors. We employ bright pulses as faked states, timed to arrive at the avalanche photodiodes outside ...

    • Automated characterization of single-photon avalanche photodiode 

      Ghazali, Aina; Bugge, Audun Nystad; Sauge, Sebastien; Makarov, Vadim (Journal article; Peer reviewed, 2011)
      We report an automated characterization of a single-photon detector based on commercial silicon avalanche photodiode (PerkinElmer C30902SH). The photodiode is characterized by I-V curves at different illumination levels ...

    • Controlled Laser Damage of Single-Photon Avalanche Photodiodes 

      Bugge, Audun Nystad (Master thesis, 2012)
      Quantum cryptography has been developed from being a theoretical proposal to having real world applications, with companies developing and selling quantum key distribution (QKD) instruments commercially. Although laws of ...

    • Controlling a superconducting nanowire single-photon detector using tailored bright illumination 

      Lydersen, Lars Vincent Van de Wiel; Akhlaghi, Mohsen K.; Majedi, A. Hamed; Skaar, Johannes; Makarov, Vadim (Journal article; Peer reviewed, 2011)
      We experimentally demonstrate that a superconducting nanowire single-photon detector is deterministically controllable by bright illumination. We found that bright light can temporarily make a large fraction of the nanowire ...

    • Controlling an actively-quenched single photon detector with bright light 

      Sauge, Sebastien; Lydersen, Lars Vincent Van de Wiel; Anisimov, Andrey; Skaar, Johannes; Makarov, Vadim (Journal article; Peer reviewed, 2011)
      We control using bright light an actively-quenched avalanche single-photon detector. Actively-quenched detectors are commonly used for quantum key distribution (QKD) in the visible and near-infrared range. This study shows ...

    • Controlling passively quenched single photon detectors by bright light 

      Makarov, Vadim (Journal article; Peer reviewed, 2009)
      Single photon detectors (SPDs) based on passively quenched avalanche photodiodes can be temporarily blinded by relatively bright light, of intensity less than 1nW. A bright-light regime suitable for attacking a quantum key ...

    • Full-field implementation of a perfect eavesdropper on a quantum cryptography system 

      Gerhardt, Ilja; Liu, Qin; Lamas-linares, Antia; Skaar, Johannes; Kurtsiefer, Christian; Makarov, Vadim (Journal article; Peer reviewed, 2011)
      Quantum key distribution (QKD) allows two remote parties to grow a shared secret key. Its security is founded on the principles of quantum mechanics, but in reality it significantly relies on the physical implementation. ...

    • Quantum cryptography and quantum cryptanalysis 

      Makarov, Vadim (Doktoravhandlinger ved NTNU, 1503-8181; 2007:67, Doctoral thesis, 2007)
      This doctoral thesis summarizes research in quantum cryptography done at the Department of Electronics and Telecommunications at the Norwegian University of Science and Technology (NTNU) from 1998 through 2007. The opening ...