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- W4384389976 abstract "We studied geometric quantum speed limits (QSL) of a qubit subject to decoherence in an ensemble of chloroform molecules in a Nuclear Magnetic Resonance experiment. The QSL is a fundamental lower bound on the evolution time for quantum systems undergoing general physical processes. To do so, we controlled the system-reservoir interaction and the spin relaxation rates by adding a paramagnetic salt, which allowed us to observe both Markovian and non-Markovian open system dynamics for the qubit. We used two distinguishability measures of quantum states to assess the speed of the qubit evolution: the quantum Fisher information (QFI) and Wigner-Yanase skew information (WY). For non-Markovian dynamics and low salt concentrations, we observed crossovers between QSLs related to the QFI and WY metrics. The WY metric sets the tighter QSL for high concentrations and Markovian dynamics. We also show that QSLs are sensitive even to small fluctuations in spin magnetization." @default.
- W4384389976 created "2023-07-15" @default.
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- W4384389976 date "2023-07-13" @default.
- W4384389976 modified "2023-09-23" @default.
- W4384389976 title "Experimental investigation of geometric quantum speed limits in an open quantum system" @default.
- W4384389976 doi "https://doi.org/10.48550/arxiv.2307.06558" @default.
- W4384389976 hasPublicationYear "2023" @default.
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