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Nanoscale quantum plasmon sensing based on strong photon-exciton coupling
Zhiyuan Qian1, Juanjuan Ren1, Fan Zhang1
1State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, People's Republic of China.
Nanotechnology
|December 3, 2019
Summary
We introduce a quantum plasmon sensing system using strong photon-exciton coupling. This novel approach enhances sensitivity for nanoscale applications like bio-sensing and quantum photonics.
Area of Science:
- Quantum optics
- Nanophotonics
- Plasmonics
Background:
- Surface plasmon resonance (SPR) based sensors are widely used.
- Traditional sensors face limitations in sensitivity and nanoscale applications.
Purpose of the Study:
- To propose a quantum plasmon sensing system.
- To leverage strong photon-exciton coupling for enhanced sensitivity.
- To explore applications in nanoscale sensing.
Main Methods:
- Utilizing a gap surface plasmon nanostructure.
- Implementing strong photon-exciton coupling.
- Characterizing sensitivity via Rabi splitting and resonance spectral shift.
Main Results:
- The proposed system's sensitivity is determined by coupling coefficient and detuning.
- Sensitivity is tunable by adjusting the emitter's dipole moment.
- Achieved sensitivity surpasses traditional plasmon sensing systems.
Conclusions:
- Quantum plasmon sensing offers a unique mechanism for nanoscale detection.
- The system shows promise for bio-sensing, opto-chemical sensing, and quantum photonics.
- Further development can enhance sensitivity and broaden applications.
