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quant-ph2005
Quantum cloning
Valerio Scarani, Sofyan Iblisdir, Nicolas Gisin +1
The impossibility of perfectly copying (or cloning) an arbitrary quantum state is one of the basic rules governing the physics of quantum systems. The processes that perform the op…
quant-ph2005
Relative states, quantum axes and quantum references
E. Bagan, S. Iblisdir, R. Munoz-Tapia
We address the problem of measuring the relative angle between two "quantum axes" made out of N1 and N2 spins. Closed forms of our fidelity-like figure of merit are obtained for an…