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Title: Long distance measurement-device-independent quantum key distribution with entangled photon sources

We present a feasible method that can make quantum key distribution (QKD), both ultra-long-distance and immune, to all attacks in the detection system. This method is called measurement-device-independent QKD (MDI-QKD) with entangled photon sources in the middle. By proposing a model and simulating a QKD experiment, we find that MDI-QKD with one entangled photon source can tolerate 77 dB loss (367 km standard fiber) in the asymptotic limit and 60 dB loss (286 km standard fiber) in the finite-key case with state-of-the-art detectors. Our general model can also be applied to other non-QKD experiments involving entanglement and Bell state measurements.
Authors:
; ; ;  [1]
  1. Centre for Quantum Information and Quantum Control, Departments of Physics and Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4 (Canada)
Publication Date:
OSTI Identifier:
22218208
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 6; Other Information: (c) 2013 © 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASYMPTOTIC SOLUTIONS; DETECTION; DISTANCE; DISTRIBUTION; EQUIPMENT; FIBERS; LOSSES; PHOTONS; QUANTUM ENTANGLEMENT