Unified Approach to Universal Cloning and Phase-Covariant Cloning
classification
🪐 quant-ph
keywords
cloningquantumformulauniversalanalyticalanalyzeapproachapproximate
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We analyze the problem of approximate quantum cloning when the quantum state is between two latitudes on the Bloch's sphere. We present an analytical formula for the optimized 1-to-2 cloning. The formula unifies the universal quantum cloning (UQCM) and the phase covariant quantum cloning.
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