(PhysOrg.com) — As early communications systems using quantum cryptography become commercially available, physicists have been investigating new types of security attacks in an effort to defend against them. In a recent study, researchers have identified and demonstrated a new, highly effective way to eavesdrop on a quantum key distribution (QKD) system that involves blinding the receivers detector during the “dead time” of single-photon detectors.
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Physicists offer countermeasure to new quantum eavesdropping attack