Location-Dependent Communications using Quantum Entanglement

Details Location-Dependent Communications using Quantum Entanglement Location-Dependent Communications using Quantum Entanglement

2010-03-04

arxiv.org/abs/1003.0949v1

Phys. Rev. A 81, 042319 (2010)

Physics

Quantum Physics

11 pages, 1 figure

Scientific paper

10.1103/PhysRevA.81.042319

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.

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