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- W2950654002 abstract "Many experiments in quantum information aim at creating graph states. Quantifying the purity of an experimentally achieved graph state could in principle be accomplished using full-state tomography. This method requires a number of measurement settings growing exponentially with the number of constituents involved. Thus, full-state tomography becomes experimentally infeasible even for a moderate number of qubits. In this paper we present a method to estimate the purity of experimentally achieved graph states with simple measurements. The observables we consider are the stabilizers of the underlying graph. Then, we formulate the problem as: What is the state with the least purity that is compatible with the measurement data? We solve this problem analytically and compare the obtained bounds with results from full-state tomography for simulated data." @default.
- W2950654002 created "2019-06-27" @default.
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- W2950654002 date "2009-07-10" @default.
- W2950654002 modified "2023-09-27" @default.
- W2950654002 title "Estimating Purity and Entropy in Stabilizer State Experiments" @default.
- W2950654002 hasPublicationYear "2009" @default.
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