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Informace o publikaci
Generalized measurements via programmable quantum processor
Autoři | |
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Rok publikování | 2003 |
Druh | Článek v odborném periodiku |
Časopis / Zdroj | Physical Review A |
Fakulta / Pracoviště MU | |
Citace | |
Obor | Informatika |
Klíčová slova | measurement; processor |
Popis | We show that it is possible to control the trade-off between information gain and disturbance in generalized measurements of qudits by utilizing a programmable quantum processor. This universal quantum machine allows us to perform a generalized measurement on the initial state of the input qudit to construct a Husimi function of this state. The trade-off between the gain and the disturbance of the qudit is controlled by the initial state of ancillary system that acts as a program for the quantum-information distributor. The trade-off fidelity does not depend on the initial state of the qudit. |
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