Terahertz biological detection method based on five-level rydberg quantum state and device comprising same

US11506600B2 · kind B2 · utility

Assignee

• University of Shanghai for Science and Technology · CN

Inventors

• Yan Peng · Shanghai, CN
• Yiming Zhu · Hefei, CN
• Ruijie Peng · Shanghai, CN
• Yanchen ZHOU · Shanghai, CN
• Weinan Ge · Shanghai, CN
• Jinbiao Zhang · Shanghai, CN
• Songyan Hu · Shanghai, CN
• Can SUN · Shanghai, CN
• Li Zhou · Tangxia, CN
• Xitian Hu · Shanghai, CN

Key dates

• Filing date: May 17, 2021
• Grant date: Nov 22, 2022
• Expiry date: Jun 13, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/0636
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present disclosure provides a terahertz biological detection method and a device comprising the same, in which biological samples with different molecular formulas have their characteristic peaks in the terahertz band. In the process of sweeping frequency with terahertz, when the terahertz frequency point corresponds to the characteristic peak frequency of the substance to be detected, resonant absorption occurs, and the transmitted/reflected terahertz wave electric field intensity will suddenly decrease. In the electromagnetically induced transparency spectrum corresponding to the Rydberg quantum state, the signal splitting amplitude is significantly reduced. Therefore, the characteristic peak frequency and specific content of the substance to be detected can be accurately determined by comparing the dependence of the Rydberg quantum state with the additional terahertz electric field intensity on the excitation energy level.