Nonlinear operations in quantum-information theory
- 1 May 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 59 (5) , 3320-3324
- https://doi.org/10.1103/physreva.59.3320
Abstract
Quantum-information theory is used to analyze various nonlinear operations on quantum states. The universal disentanglement machine is shown to be impossible, and partial (negative) results are obtained in the state-dependent case. The efficiency of the transformation of nonorthogonal states into orthogonal ones is discussed.Keywords
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