Optimal state estimation for d-dimensional quantum systems

Details Optimal state estimation for d-dimensional quantum systems Optimal state estimation for d-dimensional quantum systems

1998-12-07

arxiv.org/abs/quant-ph/9812016v1

Phys.Lett. A253 (1999) 249-251

Physics

Quantum Physics

3 pages

Scientific paper

10.1016/S0375-9601(99)00099-7

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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