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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5928

Title: Maintaining quantum coherence in the presence of noise through state monitoring
Authors: Konrad, T
Uys, H
Keywords: Quantum wave function
Quantum control
Rabi oscillations
Issue Date: Jan-2012
Publisher: American Physical Society
Citation: Konrad, T and Uys, H. 2012. Maintaining quantum coherence in the presence of noise through state monitoring. Physical Review A, vol. 85, pp 012102(1) - 012102(4)
Series/Report no.: Workflow;8700
Abstract: Unsharp measurements allow the estimation and tracking of quantum wave functions in real time with minimal disruption of the dynamics. Here we demonstrate that high-fidelity state monitoring, and hence quantum control, is possible, even in the presence of classical dephasing and amplitude noise, by simulating such measurements on a two-level system undergoing Rabi oscillations. Finite estimation fidelity is found to persist indefinitely after the decoherence times set by the noise fields in the absence of measurement.
Description: Copyright: 2012 American Physical Society
URI: http://pra.aps.org/pdf/PRA/v85/i1/e012102
http://hdl.handle.net/10204/5928
ISSN: 1050-2947
Appears in Collections:Laser physics and technology
General science, engineering & technology

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