Quantum Fingerprinting with a Single Particle

Details Quantum Fingerprinting with a Single Particle Quantum Fingerprinting with a Single Particle

2003-05-20

arxiv.org/abs/quant-ph/0305112v1

Physics

Quantum Physics

6 pages including 1 figure

Scientific paper

We show that the two slit experiment in which a single quantum particle interferes with itself can be interpreted as a quantum fingerprinting protocol: the interference pattern exhibited by the particle contains information about the environment it encountered in the slits which would require much more communication to learn classically than is required quantum mechanically. An extension to the case where the particle has many internal degrees of freedom is suggested and its interpretation is discussed in detail. A possible experimental realization is proposed.

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