Optimal universal and state-dependent quantum cloning
We establish the best possible approximation to a perfect quantum cloning machine that produces two clones out of a single input. We analyze both universal and state-dependent cloners. The maximal fidelity of cloning is shown to be 5/6 for universal cloners. It can be achieved either by a special un...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1998
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