Avalanche Terahertz Photon Detection in a Rydberg Tweezer Array

Area of Science:

• Quantum optics
• Atomic physics
• Terahertz science

Background:

• Low-intensity terahertz (THz) radiation detection is challenging due to weak signals.
• Rydberg atoms offer unique properties for sensitive measurements.

Purpose of the Study:

• To propose and theoretically investigate a protocol for amplified detection of low-intensity THz radiation.
• To achieve single-photon sensitivity in THz detection using Rydberg tweezer arrays.

Main Methods:

• Utilizing Rydberg tweezer arrays for trapping and manipulating atoms.
• Harnessing strong THz-range transitions between highly excited Rydberg states for photon capture.
• Exploiting the Rydberg facilitation mechanism for signal amplification.
• Developing a theoretical model including atomic motion and many-body dynamics using tensor network methods.

Main Results:

• The proposed protocol offers single-photon sensitivity for THz detection.
• The method demonstrates a low dark count rate.
• Theoretical modeling and simulation of the system dynamics are presented.

Conclusions:

• The Rydberg tweezer array protocol provides a promising pathway for sensitive THz radiation detection.
• This approach could advance applications requiring precise measurement of weak THz fields.