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Quantum channel-estimation with particle loss: GHZ versus W states
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Paper
Quantum channel-estimation with particle loss: GHZ versus W states
2016
Overview
We consider quantum channel-estimation for depolarizing channels and phase-flip channels extended by ancilla qubits and fed with a GHZ or W state. After application of the channel one or several qubits can be lost, and we calculate the impact of the loss on the quantum Fisher information that determines the smallest uncertainty with which the parameters of these channels can be estimated.
Publisher
Cornell University Library, arXiv.org
