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Center for Astrophysics Research and Technologies Seminar Series Information

 

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Maximally sensitive sets of states

Thursday September 17, 2020
3:30 pm


 Presenter:  Daniel Gottesman, Perimeter Institute
 Series:  CQuIC Seminars
 Abstract:  Coherent errors in a quantum system can, in principle, build up much more rapidly than incoherent errors, accumulating as the square of the number of qubits in the system rather than linearly. I will characterize the types of channels that can exhibit such behavior and present a simple protocol that can detect and characterize coherent errors whenever they are present, no matter what their nature. This allows us to identify coherent errors in gates and
measurements to within a constant fraction of the maximum possible sensitivity to such errors.
 Host:  Akimasa Miyake
 Location:  CQuIC Zoom seminar

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