Browsing by Author "Jam, Naser Chamani"
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ArticlePublication Metadata only Attack to quantum cryptosystems through RF fingerprints from photon detectors(IEEE, 2022-03) Durak, Kadir; Jam, Naser Chamani; Karamzadeh, S.; Electrical & Electronics Engineering; DURAK, Kadir; Jam, Naser ChamaniThe well-known RF penetration method is implemented on the quantum cryptosystems. In this study, RF radiations from the single photon detectors in a quantum key distribution system are intercepted. It was found that the data contents of a quantum transmission system can be detected from the vicinity of the receiving parties by exploiting the radiations of avalanche effect of single photon detectors. We showed that any Geiger-mode avalanche photodetector acts like a downconverter that converts the optical-wavelength photons to radio-wavelength photons. In our experiment, the fingerprints of the avalanche radiations from commercial single photon detectors were fed to a trained deep learning neural network, and the bit content of quantum transmission was cloned with >99% accuracy up to a distance of 2 meters from the detectors. We also speculate on the enhancement of the key cloning accuracy and range of the eavesdropping.ArticlePublication Metadata only Development of an aerial interface for extraction of the electrodynamic fingerprints of the single-photon detectors(Wiley, 2021-12) Karamzadeh, S.; Durak, Kadir; Jam, Naser Chamani; Rafiei, V.; Awad, B.; Electrical & Electronics Engineering; DURAK, Kadir; Jam, Naser ChamaniIn this study, a novel structure of semi array of antipodal Vivaldi antenna is designed to extract the RF radiations from the single-photon detectors in a quantum key distribution system. The proposed antenna covers a frequency range from 2 to 12 GHz with an average gain of 12.5 dBi which has improved by a lens structure. In the first step, the design proceeding of the antenna has been discussed, and then, some of the unique futures of the proposed antenna which promoted it to use in quantum attack systems, such as linear momentum, a good Envelope Correlation Coefficient, and Gaussian pulse response, are discussed.Conference paperPublication Metadata only Object ranging and sensing by temporal cross-correlation measurement(SPIE, 2020) Kuniyil, Hashir Puthiyapurayil; Jam, Naser Chamani; Durak, Kadir; Electrical & Electronics Engineering; Kimata, M.; Shaw, J. A.; Valenta, C. R.; DURAK, Kadir; Kunıyıl, Hashır Puthıyapurayıl; Jam, Naser ChamanıWe present a novel method to measure the range of an object in a lab setting. This is realised by utilizing the phase insensitive cross-correlation analysis of the probe and reference photons generated in a spontaneous parametric down-conversion process. In our technique, the comparative measurement of time-correlated photons after one is transmitted to the target direction and the copy of it retained at the lab allows to single out the signal from the noise lead to sense, range and imaging the sample.Conference paperPublication Metadata only Object tracking and identification by quantum radar(SPIE, 2019) Durak, Kadir; Jam, Naser Chamani; Dindar, Çağrı; Electrical & Electronics Engineering; Rarity, J. G.; Kimata, M.; Shaw, J. A.; Valenta, C. R.; DURAK, Kadir; Jam, Naser Chamanı; Dindar, ÇağrıQuantum Radar is a promising technology that could have a strong impact on the civilian and military realms. In this study we introduce a new concept design for implementing a Quantum Radar, based on the time and polarization correlations of the entangled photons for detection and identification and tracking of high-speed targets. The design is focused on extracting high resolution details of the target with precision timing of entangled photons that provides important operational capabilities like distinguishing a target from a decoy. The quantum entanglement properties guarantee the legitimacy of the photons captured by the search telescope. Time correlations of the photon detection events can be extracted via cross-correlation operation between two sets of photon detection time-tags for the entangled photons. The fact that the wavelengths of the entangled photons can be tuned also makes the Quantum Radar concept an enticing candidate for tracking stealth objects. We present the proof-of-principle test results of the Quantum Radar and discuss the technical challenges and limitations of the design.Master ThesisPublication Metadata only Side-channel attack to quantum communications by exploiting electromagnetic radiations of the single photon detectors(2020-08-30) Jam, Naser Chamani; Durak, Kadir; Durak, Kadir; Akgiray, Ahmed Halid; Karamzadeh, S.; Department of Electrical and Electronics Engineering; Durak, KadirIn this thesis an unprecedented cyber-physical attack which can be a game changer in the quantum cryptosystems' security is explained. This attack is the first non-optical patented intercept in quantum field that is based on a security issue in the physical layer of the quantum communication and key distribution systems. We experimentally and theoretically showed that the bit contents of a quantum key transmission system can be intercepted from far away by exploiting the ultrawideband electromagnetic signals radiated from the hi-voltage avalanche effect of the single photon detectors. This concept was a significant hidden secret based on the physical nature of the single photon detectors that are generally used in quantum key distribution. It has been proved theoretically and experimentally that any Geiger-mode avalanche photodiode that is used inside single photon detectors, systematically acts like a downconverter that converts the optical-wavelength photons to radio-wavelength photons. Our experiments also showed that the radiated waveforms captured by an ultrawideband antenna can be used as a unique fingerprint to find which photodiode in the cryptosystem has absorbed a photon. These fingerprints were fed to a deep learning neural network as training data, and after training, the neural network was able to clone the bit content of quantum transmission with high accuracy.