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Quantum sensing of strongly coupled light-matter systems using free electrons
Aviv Karnieli1, Shai Tsesses2, Renwen Yu3
1Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Ramat Aviv 69978 Tel Aviv, Israel.
Science Advances
|January 4, 2023
Summary
Free electrons act as quantum sensors for light-matter systems, enabling precise measurements of quantum states. This quantum-enhanced sensing protocol offers nanometric resolution for subnanometer emitters within optical cavities.
Area of Science:
- Quantum optics
- Cavity quantum electrodynamics
- Quantum sensing
Background:
- Strong light-matter coupling is crucial for quantum technologies.
- Current quantum probes lack the necessary nanometric spatial resolution for multi-qubit systems.
- Optical cavity quantum electrodynamics demands advanced sensing capabilities.
Purpose of the Study:
- To propose free electrons as high-resolution quantum sensors for light-matter systems.
- To develop a quantum-enhanced sensing protocol for subnanometer emitters in cavities.
- To leverage quantum interference for precise measurements of emitter properties.
Main Methods:
- Shaping free-electron wave packets for quantum state measurement.
- Utilizing quantum interference of electron wave packets.
- Developing a sensing protocol for emitter position and dipole orientation.
Main Results:
- Demonstrated free electrons as versatile quantum sensors.
- Showcased quantum-enhanced sensing with nanometric resolution.
- Validated the applicability of electron-cavity quantum interactions.
Conclusions:
- Free electrons offer a novel approach to probing strongly coupled light-matter systems.
- The proposed method provides unprecedented spatial resolution for quantum sensing.
- Electron-cavity interactions are a promising avenue for future quantum technologies.
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