An N-particle GHZ-based secure remote sensing protocol with Heisenberg-limited precision is extended by local quantum optimal control, which numerical three-qubit simulations show improves Fisher information under dephasing and depolarizing noise.
In this model, dephasing is not restricted to a single direction but is represented by a combination of the Pauli matricesσx, σy, andσz
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Controlled quantum secure remote sensing
An N-particle GHZ-based secure remote sensing protocol with Heisenberg-limited precision is extended by local quantum optimal control, which numerical three-qubit simulations show improves Fisher information under dephasing and depolarizing noise.