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A Fast and Compact Quantum Random Number Generator
Thomas Jennewein, Ulrich Achleitner, Gregor Weihs +2
We present the realization of a physical quantum random number generator based on the process of splitting a beam of photons on a beam splitter, a quantum mechanical source of true…
Quantum Cryptography with Entangled Photons
Thomas Jennewein, Christoph Simon, Gregor Weihs +2
By realizing a quantum cryptography system based on polarization entangled photon pairs we establish highly secure keys, because a single photon source is approximated and the inhe…
Optimal Quantum Cloning via Stimulated Emission
Christoph Simon, Gregor Weihs, Anton Zeilinger
We show that optimal universal quantum cloning can be realized via stimulated emission. Universality of the cloning procedure is achieved by choosing systems that have appropriate…
High-efficiency quantum interrogation measurements via the quantum Zeno effect
P. G. Kwiat, A. G. White, J. R. Mitchell +4
The phenomenon of quantum interrogation allows one to optically detect the presence of an absorbing object, without the measuring light interacting with it. In an application of th…