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Center for Nonlinear Studies |
Accurate characterization and control of open quantum systems exposed to realistic, non-Markovian noise are vital for exploiting the full potential of quantum technologies and eventually reaching quantum fault tolerance. I will describe how to leverage the mathematical notion of a “frame†to build a simplified, “model-reduced†representation of the noisy dynamics of interest, which is directly tied to the available, finite control resources. Such a frame-based, “control-adapted†formulation overcomes important limitations of existing approaches. In particular, I will outline how it allows i) to implement quantum noise spectroscopy beyond the traditional frequency-domain setting — including digital, hardware-efficient noise characterization in the time domain; and ii) to achieve noise-optimized control synthesis — with emphasis on optimal quantum gate design under non-Gaussian noise.
Bio: Pr. Lorenza Viola earned her Master degree at the University of Trento (Italy) and completed her Ph.D. at the University of Padua with a dissertation on "Relativistic stochastic quantization through co-moving coordinates" that was supervised by Pr. Laura M. Morato. Lorenza held postdoctoral research positions at the Massachusetts Institute of Technology and LANL, where she became an J.R. Oppenheimer Fellow.She joined Dartmouth College as an associate professor in 2004 and and is now a James Frank Family Professor of Physics. In 2014, Lorenza was named as a Fellow of the American Physical Society (APS) "For seminal contributions at the interface between quantum information theory and quantum statistical mechanics, in particular, methods for decoherence control based on dynamical decoupling and noiseless subsystems and for characterizing entanglement in quantum many-body systems".
Note: Lorenza will be at LANL Monday afternoon and Tuesday, if you wish to arrange a meeting with her please contact her hosts.
Host: Frederic Sauvage and Martin Larocca