Hybrid Quantum Cloning Machine

Details Hybrid Quantum Cloning Machine Hybrid Quantum Cloning Machine

2007-05-04

arxiv.org/abs/0705.0631v2

Quantum Information Processing,Volume 6, Number 4, 2007

Physics

Quantum Physics

Accepted in Quantum Information Processing

Scientific paper

In this work, we introduce a special kind of quantum cloning machine called Hybrid quantum cloning machine. The introduced Hybrid quantum cloning machine or transformation is nothing but a combination of pre-existing quantum cloning transformations. In this sense it creates its own identity in the field of quantum cloners. Hybrid quantum cloning machine can be of two types: (i) State dependent and (ii) State independent or Universal. We study here the above two types of Hybrid quantum cloning machines. Later we will show that the state dependent hybrid quantum-cloning machine can be applied on only four input states. We will also find in this paper another asymmetric universal quantum cloning machine constructed from the combination of optimal universal B-H quantum cloning machine and universal anti-cloning machine. The fidelities of the two outputs are different and their values lie in the neighborhood of ${5/6} $

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