Quantum Cloning and Distributed Measurements

@inproceedings{Bru2001QuantumCA,
  title={Quantum Cloning and Distributed Measurements},
  author={Dagmar Bru{\ss} and John Calsamiglia and Norbert Lutkenhaus},
  year={2001}
}
We study measurements on various subsystems of the output of a universal $\stackrel{\ensuremath{\rightarrow}}{1}2$ cloning machine, and establish a correspondence between these measurements at the output and effective measurements on the original input. We show that one can implement sharp effective measurement elements by measuring only two out of the three output systems. Additionally, certain complete sets of sharp measurements on the input can be realized by measurements on the two clones… CONTINUE READING

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