Cloning and quantum computation

Cloning and quantum computation

We discuss how quantum information distribution can improve the performance of some quantum computation tasks. This distribution can be naturally implemented with different types of quantum cloning procedures. We give two examples of tasks for which cloning provides some enhancement in performance, and briefly discuss possible extensions of the idea.

”Partial” quantum cloning and quantum cloning of the mixed states

We discuss the ”partial” quantum cloning of the pure two-partite states, when the ”part” of initial state related to the one qubit is copied only. The same approach gives the possibility to design the quantum copying machine for the mixed qubit states. PACS: 03.67 -a, 03.67 Dd

Quantum cloning, Quantum Money, and Quantum Monogamy

Quantum Computation and Quantum Information

This book provides a thorough introduction to quantum information theory and quantum computation in general, especially covering the theoretical and computational, rather than experimental, aspects of these fields. The particular strengths of the volume are: the completeness of both basic and more advanced aspects of quantum computation and theory (including simple topics such as qubits and qub...

Quantum walks and quantum computation

The field of quantum information applies the concepts of quantum physics to problems in computer science, and shows great potential for allowing efficient computation. In this thesis I concentrate on a particular quantum information theoretic tool known as the quantum walk. There are two widely studied versions of the quantum walk, the continuous time walk, and the discrete time walk. The discr...