Phys. Rev. Lett. 94, 060502 (2005) [4 pages]Random Decoupling Schemes for Quantum Dynamical Control and Error SuppressionReceived 3 October 2004; published 17 February 2005 We present a general control-theoretic framework for constructing and analyzing random decoupling schemes, applicable to quantum dynamical control of arbitrary finite-dimensional composite systems. The basic idea is to design the control propagator according to a random rather than deterministic path on a group. We characterize the performance of random decoupling protocols, and identify control scenarios where they can significantly weaken time scale requirements as compared to cyclic counterparts. Implications for reliable quantum computation are discussed. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.060502
DOI:
10.1103/PhysRevLett.94.060502
PACS:
03.67.Pp, 03.65.Yz, 89.70.+c
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.