chanelink logo
CHANELINK
English

Significant progress has been made in the research on the detection of microwave electric fields in the Rydberg area of Shanghai Institute of Optics and Technology

1030
2024-05-08 15:36:49
See translation

Recently, the Aerospace Laser Technology and System Department of the Shanghai Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, and the East China Research Team of the Key Laboratory of Quantum Optics, Chinese Academy of Sciences, together with the research team of Professor Chen Liqing of East China Normal University, demonstrated a Rydberg microwave sensor with high sensitivity and high instantaneous bandwidth for the first time in rubidium Rydberg atoms. The related achievements are titled "Highly sensitive microwave electronics with enhanced instantaneous bandwidth" and published in the PHYSICAL VIEW APPLED (Letter).

Rydberg atoms are highly excited atoms with a large electric dipole moment and are highly sensitive to external electromagnetic fields. Therefore, it has been proposed to use the electromagnetic induced transparency (EIT) and Autler Townes (AT) effects of Rydberg atoms to measure microwave electric fields. The detection sensitivity and instantaneous bandwidth are key indicators for Rydberg microwave detection. Previously, based on Rydberg atomic superheterodyne detection technology, high sensitivity (55 nV cm? 1 Hz? 1/2) could be achieved, but its instantaneous bandwidth was limited to several hundred kilohertz. Having both high sensitivity and large instantaneous bandwidth is a challenge in the research field of Rydberg microwave electric field detection.

Based on six wave mixing technology, the research team experimentally demonstrated a Rydberg microwave sensor that achieves both high sensitivity and high instantaneous bandwidth in a rubidium Rydberg atomic gas chamber. With an instantaneous bandwidth of up to 10.2 MHz, the maximum detection sensitivity can reach 62nVcm-1Hz-1/2. Theoretical and experimental results indicate that the enhanced high-frequency response comes from the enhancement effect of the detection light negative sideband generated by the six wave mixing process. The research results will promote the application of Rydberg microwave sensing technology in radar and communication.

The related work has been supported by projects such as the National Natural Science Foundation of China.

Figure 1 Schematic diagram of the experimental setup for the principle (a) of the Rydberg microwave sensor

(b) (c) Two six wave mixing processes that generate positive and negative sidebands

Figure 2 Sensitivity of Rydberg Microwave Sensor (a) Relationship between Superheterodyne Signal and Signal Microwave Power (b) Sensitivity Determined by System Noise

Source: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

Related Recommendations

  • China University of Science and Technology has made significant progress in the field of pure red perovskite light-emitting diodes

    Recently, four research groups from the University of Science and Technology of China, namely Yao Hongbin, Fan Fengjia, Lin Yue, and Hu Wei, have collaborated to make significant progress in the field of pure red perovskite light-emitting diodes (LEDs). The team independently invented the Electrical Excitation Transient Spectroscopy (EETA) technology and used it to reveal that hole leakage is the ...

    05-12
    See translation

  • Innovative nanoparticle analysis: achieving breakthrough 3D imaging using X-ray lasers

    The latest progress in X-ray laser technology has opened up a new era of nanoscale exploration, bringing unprecedented opportunities for materials science and nanotechnology. Researchers have developed a novel imaging technique that can directly visualize separated nanosamples in free flight, capturing their complex structures with stunning details. This breakthrough method relies on single cohere...

    2024-03-05
    See translation

  • Xi'an Institute of Optics and Fine Mechanics has made new progress in the field of metasurface nonlinear photonics

    Recently, the Research Group of Nonlinear Photonics Technology and Applications in the State Key Laboratory of Transient Optics and Photonics Technology of Xi'an Institute of Optics and Fine Mechanics has made important progress in the field of super surface nonlinear photonics. Relevant research results were published in the internationally famous journal Nanoscale Horizons. The first author of t...

    2024-09-27
    See translation

  • Jena Helmholtz Institute Using Air Deflection Laser Beam

    A novel method is used to deflect the laser beam using only air. The interdisciplinary research team reported in the journal Nature Photonics that invisible gratings made solely of air not only do not suffer damage from lasers, but also retain the original quality of the beam. The researchers have applied for a patent for their method.Technology and PrinciplesThis innovative technology utilizes so...

    2023-10-07
    See translation

  • Innovating Photonics: Lithium Tantalate Provides Power for the Next Generation of Optoelectronic Circuits

    The new photonic integrated circuit technology based on lithium tantalate has improved cost efficiency and scalability, making significant progress in the fields of optical communication and computing.The rapid development of photonic integrated circuits (PICs) has revolutionized optical communication and computing systems, combining multiple optical devices and functions on a single chip.For deca...

    2024-05-14
    See translation