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- W2950457807 abstract "Coherent-state quantum process tomography (csQPT) is a method of completely characterizing a quantum-optical black box by probing it with coherent states and performing homodyne measurements on the output [M. Lobino et al, Science 322, 563 (2008)]. We present a technique for csQPT that is fully based on statistical inference, specifically, quantum expectation-maximization. The method relies on the Jamiolkowski isomorphism and iteratively reconstructs the process tensor in the Fock basis directly from the experimental data. This approach permits incorporation of a priori constraints into the reconstruction procedure, thereby guaranteeing that the resulting process tensor is physically consistent. Furthermore, our method is easier to implement and requires a narrower range of coherent states than its predecessors. We test its feasibility using simulations on several experimentally relevant processes." @default.
- W2950457807 created "2019-06-27" @default.
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- W2950457807 date "2012-04-26" @default.
- W2950457807 modified "2023-10-18" @default.
- W2950457807 title "Maximum-likelihood coherent-state quantum process tomography" @default.
- W2950457807 doi "https://doi.org/10.48550/arxiv.1204.5936" @default.
- W2950457807 hasPublicationYear "2012" @default.
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