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Updated: Mar 11, 2026
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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
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Quantum control of Hubbard excitons.
Denitsa R Baykusheva1,2, Deven Carmichael3, Clara S Weber4,5
1Department of Physics, Harvard University, Cambridge, MA, USA. denitsa.baykusheva@ista.ac.at.
Nature Materials
|March 10, 2026
Summary
Researchers achieved quantum control of a strongly correlated Hubbard exciton in Sr2CuO3 using Floquet engineering. This method manipulates many-body wavefunctions, advancing quantum control for materials science and quantum sensing applications.
Area of Science:
- Quantum materials science
- Condensed matter physics
- Quantum optics
Background:
- Quantum control of many-body wavefunctions is crucial for manipulating emergent phenomena in quantum materials.
- Floquet engineering, using periodic optical fields, is a key strategy for quantum control.
- Previous applications focused on weakly interacting systems, leaving many-body wavefunctions largely unexplored.
Purpose of the Study:
- To achieve quantum control of a strongly correlated Hubbard exciton in a one-dimensional Mott insulator.
- To explore the manipulation of many-body wavefunctions using Floquet engineering.
- To advance programmable control of correlated states and exciton-based quantum sensing.
Main Methods:
- Utilizing Floquet engineering with a non-resonant mid-infrared optical field.
- Coherently dressing the exciton wavefunction to drive rotations between bright and dark states.
- Employing resonant third-harmonic generation to quantify ultrafast rotations.
Main Results:
- Demonstrated quantum control over a strongly correlated Hubbard exciton in Sr2CuO3.
- Achieved coherent manipulation of the exciton wavefunction using Floquet engineering.
- Quantified ultrafast π/2 rotations on the Bloch sphere.
Conclusions:
- Floquet engineering enables quantum control of strongly correlated many-body wavefunctions.
- This research opens new avenues for programmable quantum control in materials.
- The findings support the development of advanced exciton-based quantum sensing technologies.
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