Optimal purification of single qubits

Abstract

We introduce a new decomposition of the multiqubit states of the form ${\rho }^{\otimes N}$ and employ it to construct the optimal single qubit purification procedure. The same decomposition allows us to study optimal quantum cloning and state estimation of mixed states.

4 pages, 1 figure

References in corpus (2)

• Optimal Quantum Cloning Machines
• Optimal universal quantum cloning and state estimation

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