Optimal state estimation for d-dimensional quantum systems
arXiv:quant-ph/9812016 · doi:10.1016/S0375-9601(99)00099-7
Abstract
We establish a connection between optimal quantum cloning and optimal state estimation for d-dimensional quantum systems. In this way we derive an upper limit on the fidelity of state estimation for d-dimensional pure quantum states and, furthermore, for generalized inputs supported on the symmetric subspace.
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