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- W2004691471 abstract "A fundamental difficulty in demonstrating quantum state tomography is that the required resources grow exponentially with the system size. For pure states and nearly pure states, the task of tomography can be more efficient. We proposed two methods for state reconstruction, by (1) minimizing entropy and (2) maximizing likelihood. The algorithm of compressed sampling is employed to solve the optimization problem. Experiments are demonstrated considering 4-qubit photonic states. The results show that (1) much fewer measurements than the standard tomography are sufficient to obtain high fidelity, and (2) the method of maximizing likelihood is more accurate and noise robust than the original reconstruction method of compressed sampling. Furthermore, the physical meaning of the methods of minimizing entropy and maximizing likelihood is clear." @default.
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- W2004691471 date "2012-04-24" @default.
- W2004691471 modified "2023-10-16" @default.
- W2004691471 title "Experimental Quantum State Tomography via Compressed Sampling" @default.
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- W2004691471 doi "https://doi.org/10.1103/physrevlett.108.170403" @default.
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