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Nonlinear photon-atom coupling with 4Pi microscopy.
Yue-Sum Chin1, Matthias Steiner1,2, Christian Kurtsiefer3,4
1Centre for Quantum Technologies, 3 Science Drive 2, Singapore, 117543, Singapore.
Nature Communications
|November 2, 2017
Summary
Researchers achieved strong single-photon interactions with atoms using 4Pi microscopy. This breakthrough enables efficient light control at the quantum level, advancing few-photon nonlinear optics.
Area of Science:
- Quantum optics
- Atomic physics
- Nanophotonics
Background:
- Nonlinear interactions between single photons and atoms are crucial for quantum technologies.
- Current methods are limited by diffraction, restricting interaction strength.
Purpose of the Study:
- To adapt super-resolution imaging for enhanced light-atom coupling.
- To achieve nonlinear optical effects at the single-photon level.
Main Methods:
- Utilized 4Pi microscopy to overcome the diffraction limit for light focusing.
- Coupled incident photons to a single atom in free space.
Main Results:
- Observed 36.6(3)% extinction of the incident light field.
- Detected modified photon statistics in the transmitted field, confirming nonlinear interaction.
Conclusions:
- Demonstrated efficient single-photon coupling to individual atoms using 4Pi microscopy.
- Opened new avenues for few-photon nonlinear optics with single atoms.
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