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Optimal state estimation for d-dimensional quantum systems

D. Bruss·C. Macchiavello
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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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D. Bruss, C. Macchiavello. 1998-12-07. Optimal state estimation for d-dimensional quantum systems. https://doi.org/10.1016/s0375-9601(99)00099-7

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