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Quantum control through measurement feedback

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dc.contributor.author Uys, Hermann
dc.contributor.author Bassa, H
dc.contributor.author Du Toit, P
dc.contributor.author Ghosh, S
dc.contributor.author Konrad, T
dc.date.accessioned 2018-10-15T11:10:36Z
dc.date.available 2018-10-15T11:10:36Z
dc.date.issued 2018-06
dc.identifier.citation Uys, H. et al. 2018. Quantum control through measurement feedback. Physical Review A, vol. 97: DOI:https://doi.org/10.1103/PhysRevA.97.060102 en_US
dc.identifier.issn 2469-9926
dc.identifier.issn 2469-9934
dc.identifier.uri DOI:https://doi.org/10.1103/PhysRevA.97.060102
dc.identifier.uri https://journals.aps.org/pra/abstract/10.1103/PhysRevA.97.060102
dc.identifier.uri https://www.researchgate.net/publication/326023732_Quantum_control_through_measurement_feedback
dc.identifier.uri http://hdl.handle.net/10204/10464
dc.description Copyright: 2018 American Physical Society. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. en_US
dc.description.abstract Measurement combined with feedback that aims to restore a presumed premeasurement quantum state will yield this state after a few measurement-feedback cycles even if the actual state of the system initially had no resemblance to the presumed state. Here we introduce this mechanism of self-fulfilling prophecy and show that it can be used to prepare finite-dimensional quantum systems in target states or force them into target dynamics. Using two-level systems as an example, we demonstrate that self-fulfilling prophecy protects the system against noise and tolerates imprecision of feedback up to the level of the measurement strength. By means of unsharp measurements the system can be driven deterministically into arbitrary, smooth quantum trajectories. en_US
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.relation.ispartofseries Worklist;21375
dc.subject Quantum control en_US
dc.title Quantum control through measurement feedback en_US
dc.type Article en_US
dc.identifier.apacitation Uys, H., Bassa, H., Du Toit, P., Ghosh, S., & Konrad, T. (2018). Quantum control through measurement feedback. http://hdl.handle.net/10204/10464 en_ZA
dc.identifier.chicagocitation Uys, Hermann, H Bassa, P Du Toit, S Ghosh, and T Konrad "Quantum control through measurement feedback." (2018) http://hdl.handle.net/10204/10464 en_ZA
dc.identifier.vancouvercitation Uys H, Bassa H, Du Toit P, Ghosh S, Konrad T. Quantum control through measurement feedback. 2018; http://hdl.handle.net/10204/10464. en_ZA
dc.identifier.ris TY - Article AU - Uys, Hermann AU - Bassa, H AU - Du Toit, P AU - Ghosh, S AU - Konrad, T AB - Measurement combined with feedback that aims to restore a presumed premeasurement quantum state will yield this state after a few measurement-feedback cycles even if the actual state of the system initially had no resemblance to the presumed state. Here we introduce this mechanism of self-fulfilling prophecy and show that it can be used to prepare finite-dimensional quantum systems in target states or force them into target dynamics. Using two-level systems as an example, we demonstrate that self-fulfilling prophecy protects the system against noise and tolerates imprecision of feedback up to the level of the measurement strength. By means of unsharp measurements the system can be driven deterministically into arbitrary, smooth quantum trajectories. DA - 2018-06 DB - ResearchSpace DP - CSIR KW - Quantum control LK - https://researchspace.csir.co.za PY - 2018 SM - 2469-9926 SM - 2469-9934 T1 - Quantum control through measurement feedback TI - Quantum control through measurement feedback UR - http://hdl.handle.net/10204/10464 ER - en_ZA


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