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Variational quantum metrology for multiparameter estimation under dephasing noise - Scientific Reports

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Variational quantum metrology for multiparameter estimation under dephasing noise - Scientific Reports

We present a hybrid quantum-classical variational scheme to enhance precision in quantum metrology. In the scheme, both the initial state and the measurement basis in the quantum part are parameterized and optimized via the classical part. It enables the maximization of information gained about the measured quantity. We discuss specific applications to 3D magnetic field sensing under several dephasing noise models.

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Variational quantum metrology for multiparameter estimation under dephasing noise - Scientific Reports

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Variational quantum metrology for multiparameter estimation under dephasing noise - Scientific Reports

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