Deletion of imperfect cloned copies

Details Deletion of imperfect cloned copies Deletion of imperfect cloned copies

2005-08-10

arxiv.org/abs/quant-ph/0508083v1

J. Phys. A 37 (2004) 1

Physics

Quantum Physics

10 Pages

Scientific paper

In this work, we design a deleting machine and shown that for some given condition on machine parameters, it gives slightly better result than P-B deleting machine [5,6]. Also it is shown that for some particular values of the machine parameters it acts like Pati-Braunstein deleting machine. We also study the combined effect of cloning and deleting machine, where at first the cloning is done by some standard cloning machines such as Wootters-Zurek [1] and Buzek-Hillery [2] cloning machine and then the copy mode is deleted by Pati-Braunstein deleting machine or our prescribed deleting machine. After that we examine the distortion of the input state and the fidelity of deletion .

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