V. Buzek, V. Vedral, M. B. Plenio, P. L. Knight, and M. Hillery, "Broadcasting of entanglement via local copying," Physical Review A, vol. 55, pp. 3327--3332, 1997.  Home/Search   Document Not in Database   Summary   APS   Related Articles   Check

....question. The problem of information disturbance tradeoff is closely related to the problems of cloning and broadcasting, and a very interesting area for research is the relation between these tasks. Much research has been done over the past few years on approximate cloning of pure states [70] [71], 72] 73] 74] 75] 76] 77] 78] 79] but relating it to the information disturbance question is a relatively unexplored area (cf. however, 73] There is clearly some relation, since a perfect cloner would allow asymptotically complete information extraction with zero disturbance. Just ....

V. Buzek, V. Vedral, M. B. Plenio, P. L. Knight, and M. Hillery, "Broadcasting of entanglement via local copying," Physical Review A, vol. 55, pp. 3327--3332, 1997.

....of a set of mutually exclusive classical states; in quantum mechanics, a quantum state represented by a vector in a Hilbert space, or a density operator on that space. Classically, the input system may retain its original state, while the no cloning theorem and related results [1] 2] 3] 4] [5], 6] 7] 8] 9] 10] 11] 12] imply that in the quantum case the input system cannot in general remain in its initial state. Both theories allow the use of encoding and decoding operations to increase the delity with which states are transmitted. Due partly to the peculiarly quantum fact ....

V. Buzek, V. Vedral, M. B. Plenio, P. L. Knight, and M. Hillery, \Broadcasting of entanglement via local copying," Physical Review A, vol. 55, pp. 3327-3332, 1997.

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