Location-Dependent Communications using Quantum Entanglement

Abstract

The ability to unconditionally verify the location of a communication receiver would lead to a wide range of new security paradigms. However, it is known that unconditional location verification in classical communication systems is impossible. In this work we show how unconditional location verification can be achieved with the use of quantum communication channels. Our verification remains unconditional irrespective of the number of receivers, computational capacity, or any other physical resource held by an adversary. Quantum location verification represents a new application of quantum entanglement that delivers a feat not possible in the classical-only channel. For the first time, we possess the ability to deliver real-time communications viable only at specified geographical coordinates.

11 pages, 1 figure

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• Why Classical Certification is Impossible in a Quantum World
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• Code-routing: a new attack on position verification
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• Secure and Robust Transmission and Verification of Unknown Quantum States in Minkowski Space
• Making Existing Quantum Position Verification Protocols Secure Against Arbitrary Transmission Loss
• Lossy-and-Constrained Extended Non-Local Games with Applications to Quantum Cryptography
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• Relativistic Quantum Communication