Universal dynamical control of local decoherence for multipartite and multilevel systems |
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Authors: | G. Gordon A.G. Kofman |
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Affiliation: | Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel |
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Abstract: | A unified theory is given of dynamically modified decay and decoherence of field-driven multilevel multipartite entangled states that are weakly coupled to zero-temperature baths or undergo random phase fluctuations. The theory allows for arbitrary local differences in their coupling to the environment. Due to such differences, the optimal driving-field modulation to ensure maximal fidelity is found to substantially differ from conventional “Bang-Bang” or π-phase flips of the single-qubit evolution. |
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Keywords: | 03.65.Yz 03.65.Ta 42.25.Kb |
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