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Adaptive quantum state estimation of an entangled qubit state

The uncertainty on the estimation of unknown parameters of a quantum state can be reduced by using adaptive measurements. Here we perform adaptive quantum-state estimation of the phase in an entangled two-qubits state. We experimentally demonstrate that the adaptive method outperforms nonadaptive me...

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Published in:Optics letters 2014-09, Vol.39 (18), p.5399-5402
Main Authors: Lerch, Stefan, Stefanov, André
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Language:English
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description The uncertainty on the estimation of unknown parameters of a quantum state can be reduced by using adaptive measurements. Here we perform adaptive quantum-state estimation of the phase in an entangled two-qubits state. We experimentally demonstrate that the adaptive method outperforms nonadaptive methods.
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subjects Qubits (quantum computing)
State estimation
Uncertainty
title Adaptive quantum state estimation of an entangled qubit state
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