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Universal Dynamical Control of Local Decoherence for Multipartite and Multilevel Systems

Goren Gordon·Gershon Kurizki·Abraham G. Kofman
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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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Goren Gordon, Gershon Kurizki, Abraham G. Kofman. 2006-08-23. Universal Dynamical Control of Local Decoherence for Multipartite and Multilevel Systems. https://doi.org/10.1016/j.optcom.2006.01.062

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