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Related Experiment Videos

Measurement-assisted coherent control.

Jiangbin Gong1, Stuart A Rice

  • 1Department of Chemistry and The James Franck Institute, The University of Chicago, Chicago, IL 60637, USA.

The Journal of Chemical Physics
|July 23, 2004
PubMed
Summary
This summary is machine-generated.

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Continuous measurement influences coherent control by managing population transfer. Strong measurements can halt population transfer, while weak measurements enhance robustness against dephasing in quantum systems.

Area of Science:

  • Quantum Control
  • Quantum Measurement Theory

Background:

  • Coherent control manipulates quantum systems.
  • Measurement can influence quantum dynamics.

Purpose of the Study:

  • Expose advantageous roles of measurement in coherent control.
  • Investigate measurement's influence on population transfer branching ratios.

Main Methods:

  • Utilized a five-level model system.
  • Applied continuous measurement to a Kobrak-Rice extended stimulated Raman adiabatic passage scheme.

Main Results:

  • Demonstrated measurement's power in controlling population transfer branching ratios.
  • Showed strong measurements can completely shut off yield to one target state.

Related Experiment Videos

  • Revealed weak measurements enhance robustness against dephasing.

    • Conclusions:

    • Continuous measurement offers effective control over quantum population transfer.
    • Measurement strength is a critical parameter for tailoring quantum system outcomes.