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Random decoupling schemes for quantum dynamical control and error suppression

Published

Author(s)

Lorenza Viola, Emanuel Knill

Abstract

We introduce a general control-theoretic setting for random dynamical decoupling, applicable to quantum , engineering of both closed-and open-system dynamics. The basic idea is to randomize the operations of the controller, by designing the control propagator according to a random rather than deterministic path on a group. We characterize the performance of random decoupling schemes, and identify control scenarios where they can significantly weaken time scale requirements as compared to standard cyclic protocols. Implications for reliable quantum computation are discussed.
Citation
Physical Review Letters
Volume
94

Keywords

decoupling, quantum computation, quantum error control

Citation

Viola, L. and Knill, E. (2005), Random decoupling schemes for quantum dynamical control and error suppression, Physical Review Letters (Accessed April 16, 2024)
Created February 17, 2005, Updated October 12, 2021